[Home] DMelt member access. Java source code: org.statcato.dialogs.stat.hytest.HyTest2PopMeanDialog
/*
* HyTest2PopMeanDialog.java
*
* Created on June 11, 2008, 11:04 AM
*/
package org.statcato.dialogs.stat.hytest;
import org.statcato.*;
import org.statcato.spreadsheet.*;
import org.statcato.statistics.inferential.*;
import org.statcato.utils.HelperFunctions;
import java.util.*;
import javax.swing.*;
import org.statcato.statistics.BasicStatistics;
/**
* A dialog for claims about the difference of two population means
* from two independent samples.
* Allows the user to specify data samples in columns of a Datasheet,
* or provide summary data values. The user must also provide
* the confidence level, alternative hypothesis, hypothesized
* mean difference, population standard deviations (if known), and
* whether the population variances are assumed equal.
* Computes and displays in log window the significance level,
* critical value, test statistic, and p-Value.
*
* @author Margaret Yau
* @version %I%, %G%
* @see org.statcato.statistics.inferential.HypothesisTest2MeanSigmaUnknown
* @see org.statcato.statistics.inferential.HypothesisTest2MeanSigmaKnown
* @since 1.0
*/
public class HyTest2PopMeanDialog extends StatcatoDialog {
/** Creates new form HyTest2PopMeanDialog */
public HyTest2PopMeanDialog(java.awt.Frame parent, boolean modal,
Statcato mTab) {
super(parent, modal);
initComponents();
app = mTab;
ParentSpreadsheet = app.getSpreadsheet();
ButtonGroup group1 = new ButtonGroup();
group1.add(Sample1ColRadioButton);
group1.add(Sample2ColRadioButton);
group1.add(SummaryRadioButton);
ButtonGroup group3 = new ButtonGroup();
group3.add(SigRadioButton);
group3.add(ConfRadioButton);
ParentSpreadsheet.populateComboBox(LabelsComboBox);
ParentSpreadsheet.populateComboBox(ValuesComboBox);
ParentSpreadsheet.populateComboBox(Pop1ComboBox);
ParentSpreadsheet.populateComboBox(Pop2ComboBox);
getRootPane().setDefaultButton(OKButton);
setHelpFile("stat-hytest-2mean");
name = "Hypothesis Test: 2-Population Means";
description = "For performing calculations for testing claims " +
"about the difference of two population means from " +
"two independent samples. ";
helpStrings.add("The sample data can be provided in one of three ways...");
helpStrings.add("Samples in one column: The population labels of " +
"samples are in one column of the Datasheet, " +
"and the individual samples are in another column.");
helpStrings.add("Samples in two columns: The samples of the two " +
"population are in two separate columns.");
helpStrings.add("Summarized sample data: The sample size, " +
"mean, and standard deviation of each of the two " +
"populations are provided.");
helpStrings.add("If population standard deviations are known, " +
"check the appropriate check box and provide the standard deviations.");
helpStrings.add("Check the Assume population variances are equal " +
"check box if the population variances are assumed equal.");
helpStrings.add("Specify the signficance or confidence level.");
helpStrings.add("Select the form of alternative hypothesis " +
"and enter the Hypothesized Mean in the provided text box.");
}
/**
* Updates elements on the dialog so that they have the most
* current values. Called by {@link #setVisible} to make
* sure the dialog displays current values when made visible again.
*
* @see #setVisible(boolean)
*/
@Override
public void updateElements() {
updateComboBox(LabelsComboBox);
updateComboBox(ValuesComboBox);
updateComboBox(Pop1ComboBox);
updateComboBox(Pop2ComboBox);
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
// //GEN-BEGIN:initComponents
private void initComponents() {
OKButton = new javax.swing.JButton();
CancelButton = new javax.swing.JButton();
jPanel1 = new javax.swing.JPanel();
jLabel1 = new javax.swing.JLabel();
Sample2ColRadioButton = new javax.swing.JRadioButton();
n2TextField = new javax.swing.JTextField();
jLabel5 = new javax.swing.JLabel();
Pop2ComboBox = new javax.swing.JComboBox();
jLabel8 = new javax.swing.JLabel();
stdev1TextField = new javax.swing.JTextField();
stdev2TextField = new javax.swing.JTextField();
SummaryRadioButton = new javax.swing.JRadioButton();
n1TextField = new javax.swing.JTextField();
LabelsComboBox = new javax.swing.JComboBox();
Pop1ComboBox = new javax.swing.JComboBox();
jLabel4 = new javax.swing.JLabel();
jLabel6 = new javax.swing.JLabel();
jLabel7 = new javax.swing.JLabel();
mean2TextField = new javax.swing.JTextField();
Sample1ColRadioButton = new javax.swing.JRadioButton();
jLabel2 = new javax.swing.JLabel();
jLabel9 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
ValuesComboBox = new javax.swing.JComboBox();
mean1TextField = new javax.swing.JTextField();
jPanel2 = new javax.swing.JPanel();
Sigma2TextField = new javax.swing.JTextField();
Sigma1TextField = new javax.swing.JTextField();
jLabel10 = new javax.swing.JLabel();
jLabel11 = new javax.swing.JLabel();
VarEqualCheckBox = new javax.swing.JCheckBox();
SigmaKnownCheckBox = new javax.swing.JCheckBox();
jPanel3 = new javax.swing.JPanel();
HyTextField = new javax.swing.JTextField();
jLabel15 = new javax.swing.JLabel();
AltComboBox = new javax.swing.JComboBox();
jLabel14 = new javax.swing.JLabel();
SigPanel = new javax.swing.JPanel();
SigLabel = new javax.swing.JLabel();
ConfidenceTextField = new javax.swing.JTextField();
ConfRadioButton = new javax.swing.JRadioButton();
SigRadioButton = new javax.swing.JRadioButton();
SigTextField = new javax.swing.JTextField();
ConfLabel = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
setTitle("Hypothesis Test: 2-Population Means");
OKButton.setText("OK");
OKButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
OKButtonActionPerformed(evt);
}
});
CancelButton.setText("Cancel");
CancelButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
CancelButtonActionPerformed(evt);
}
});
jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder("Inputs"));
jLabel1.setText("Labels in column:");
Sample2ColRadioButton.setText("Samples in two columns");
Sample2ColRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
public void stateChanged(javax.swing.event.ChangeEvent evt) {
Sample2ColRadioButtonStateChanged(evt);
}
});
n2TextField.setEnabled(false);
jLabel5.setText("Population 1:");
Pop2ComboBox.setEnabled(false);
jLabel8.setText("Mean");
stdev1TextField.setEnabled(false);
stdev2TextField.setEnabled(false);
SummaryRadioButton.setText("Summarized sample data");
SummaryRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
public void stateChanged(javax.swing.event.ChangeEvent evt) {
SummaryRadioButtonStateChanged(evt);
}
});
n1TextField.setEnabled(false);
Pop1ComboBox.setEnabled(false);
jLabel4.setText("Population 2:");
jLabel6.setText("Population 2:");
jLabel7.setText("Sample Size");
mean2TextField.setEnabled(false);
Sample1ColRadioButton.setSelected(true);
Sample1ColRadioButton.setText("Samples in one column");
Sample1ColRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
public void stateChanged(javax.swing.event.ChangeEvent evt) {
Sample1ColRadioButtonStateChanged(evt);
}
});
jLabel2.setText("Values in column:");
jLabel9.setText("Standard Deviation");
jLabel3.setText("Population 1:");
mean1TextField.setEnabled(false);
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(21, 21, 21)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel6)
.addComponent(jLabel5))
.addGap(35, 35, 35)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(n1TextField, javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(n2TextField, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.PREFERRED_SIZE, 68, javax.swing.GroupLayout.PREFERRED_SIZE))
.addComponent(jLabel7))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jLabel8, javax.swing.GroupLayout.DEFAULT_SIZE, 65, Short.MAX_VALUE)
.addComponent(mean1TextField)
.addComponent(mean2TextField))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(stdev2TextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel9)
.addComponent(stdev1TextField, javax.swing.GroupLayout.PREFERRED_SIZE, 69, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(254, 254, 254))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(SummaryRadioButton)
.addComponent(Sample1ColRadioButton)
.addComponent(Sample2ColRadioButton)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(21, 21, 21)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel1)
.addComponent(jLabel2))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(ValuesComboBox, 0, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(LabelsComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, 93, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel4)
.addComponent(jLabel3))
.addGap(26, 26, 26)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(Pop2ComboBox, 0, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(Pop1ComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, 89, javax.swing.GroupLayout.PREFERRED_SIZE))))))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 137, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap())
);
jPanel1Layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {n1TextField, n2TextField});
jPanel1Layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {stdev1TextField, stdev2TextField});
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addComponent(Sample1ColRadioButton)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(LabelsComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(ValuesComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(23, 23, 23)
.addComponent(Sample2ColRadioButton)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel4, javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(Pop1ComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(Pop2ComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGap(18, 18, 18)
.addComponent(SummaryRadioButton)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel7)
.addComponent(jLabel8)
.addComponent(jLabel9))
.addGap(11, 11, 11)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel5)
.addComponent(n1TextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(mean1TextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(stdev1TextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel6)
.addComponent(n2TextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(mean2TextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(stdev2TextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(41, Short.MAX_VALUE))
);
jPanel2.setBorder(javax.swing.BorderFactory.createTitledBorder("Population Standard Deviations/Variances"));
Sigma2TextField.setEnabled(false);
Sigma1TextField.setEnabled(false);
jLabel10.setText("σ1:");
jLabel11.setText("σ2:");
VarEqualCheckBox.setText("Assume population variances are equal");
SigmaKnownCheckBox.setText("Population standard deviations known");
SigmaKnownCheckBox.addChangeListener(new javax.swing.event.ChangeListener() {
public void stateChanged(javax.swing.event.ChangeEvent evt) {
SigmaKnownCheckBoxStateChanged(evt);
}
});
javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);
jPanel2Layout.setHorizontalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(VarEqualCheckBox)
.addGroup(jPanel2Layout.createSequentialGroup()
.addGap(32, 32, 32)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(jPanel2Layout.createSequentialGroup()
.addComponent(jLabel10, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(Sigma1TextField, javax.swing.GroupLayout.PREFERRED_SIZE, 90, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel2Layout.createSequentialGroup()
.addComponent(jLabel11, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(Sigma2TextField))))
.addComponent(SigmaKnownCheckBox))
.addContainerGap(91, Short.MAX_VALUE))
);
jPanel2Layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {Sigma1TextField, Sigma2TextField});
jPanel2Layout.setVerticalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addContainerGap()
.addComponent(SigmaKnownCheckBox)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel10, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(Sigma1TextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(8, 8, 8)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel11, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(Sigma2TextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(13, 13, 13)
.addComponent(VarEqualCheckBox)
.addContainerGap(7, Short.MAX_VALUE))
);
jPanel3.setBorder(javax.swing.BorderFactory.createTitledBorder("Alternative Hypothesis"));
HyTextField.setText("0");
jLabel15.setText("Hypothesized Mean Difference:");
AltComboBox.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Less than", "Not Equal to", "Greater than" }));
AltComboBox.setSelectedIndex(1);
jLabel14.setText("Alternative Hypothesis:");
javax.swing.GroupLayout jPanel3Layout = new javax.swing.GroupLayout(jPanel3);
jPanel3.setLayout(jPanel3Layout);
jPanel3Layout.setHorizontalGroup(
jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel3Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel3Layout.createSequentialGroup()
.addGap(10, 10, 10)
.addComponent(jLabel15)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(HyTextField, javax.swing.GroupLayout.PREFERRED_SIZE, 78, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel3Layout.createSequentialGroup()
.addComponent(jLabel14)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(AltComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap(70, Short.MAX_VALUE))
);
jPanel3Layout.setVerticalGroup(
jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel3Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel14)
.addComponent(AltComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel15)
.addComponent(HyTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
SigPanel.setBorder(javax.swing.BorderFactory.createTitledBorder("Significance"));
SigLabel.setText("0 - 1.00 (e.g. 0.05)");
ConfidenceTextField.setText("0.95");
ConfidenceTextField.setEnabled(false);
ConfidenceTextField.addFocusListener(new java.awt.event.FocusAdapter() {
public void focusLost(java.awt.event.FocusEvent evt) {
ConfidenceTextFieldFocusLost(evt);
}
});
ConfRadioButton.setText("Confidence Level:");
ConfRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
public void stateChanged(javax.swing.event.ChangeEvent evt) {
ConfRadioButtonStateChanged(evt);
}
});
SigRadioButton.setSelected(true);
SigRadioButton.setText("Significance Level:");
SigRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
public void stateChanged(javax.swing.event.ChangeEvent evt) {
SigRadioButtonStateChanged(evt);
}
});
SigTextField.setText("0.05");
SigTextField.addFocusListener(new java.awt.event.FocusAdapter() {
public void focusLost(java.awt.event.FocusEvent evt) {
SigTextFieldFocusLost(evt);
}
});
ConfLabel.setText("0 - 1.00 (e.g. 0.95)");
ConfLabel.setEnabled(false);
javax.swing.GroupLayout SigPanelLayout = new javax.swing.GroupLayout(SigPanel);
SigPanel.setLayout(SigPanelLayout);
SigPanelLayout.setHorizontalGroup(
SigPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(SigPanelLayout.createSequentialGroup()
.addContainerGap()
.addGroup(SigPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(ConfRadioButton)
.addComponent(SigRadioButton))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(SigPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(SigTextField, javax.swing.GroupLayout.PREFERRED_SIZE, 79, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(ConfidenceTextField, javax.swing.GroupLayout.PREFERRED_SIZE, 81, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(SigPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(ConfLabel)
.addComponent(SigLabel))
.addContainerGap())
);
SigPanelLayout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {ConfidenceTextField, SigTextField});
SigPanelLayout.setVerticalGroup(
SigPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(SigPanelLayout.createSequentialGroup()
.addGap(11, 11, 11)
.addGroup(SigPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(SigRadioButton)
.addComponent(SigTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(SigLabel))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(SigPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(ConfRadioButton)
.addComponent(ConfidenceTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(ConfLabel))
.addContainerGap(21, Short.MAX_VALUE))
);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, 443, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel2, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(SigPanel, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jPanel3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(layout.createSequentialGroup()
.addGap(283, 283, 283)
.addComponent(OKButton)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(CancelButton)))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {CancelButton, OKButton});
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(jPanel1, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
.addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(1, 1, 1)
.addComponent(jPanel3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(SigPanel, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGap(27, 27, 27)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(CancelButton)
.addComponent(OKButton))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
pack();
}// //GEN-END:initComponents
private void SummaryRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_SummaryRadioButtonStateChanged
if (SummaryRadioButton.isSelected()) {
n1TextField.setEnabled(true);
n2TextField.setEnabled(true);
mean1TextField.setEnabled(true);
mean2TextField.setEnabled(true);
if (SigmaKnownCheckBox.isSelected()) {
stdev1TextField.setEnabled(false);
stdev2TextField.setEnabled(false);
} else {
stdev1TextField.setEnabled(true);
stdev2TextField.setEnabled(true);
}
} else {
n1TextField.setEnabled(false);
n2TextField.setEnabled(false);
mean1TextField.setEnabled(false);
mean2TextField.setEnabled(false);
stdev1TextField.setEnabled(false);
stdev2TextField.setEnabled(false);
}
}//GEN-LAST:event_SummaryRadioButtonStateChanged
private void Sample1ColRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_Sample1ColRadioButtonStateChanged
if (Sample1ColRadioButton.isSelected()) {
LabelsComboBox.setEnabled(true);
ValuesComboBox.setEnabled(true);
} else {
LabelsComboBox.setEnabled(false);
ValuesComboBox.setEnabled(false);
}
}//GEN-LAST:event_Sample1ColRadioButtonStateChanged
private void Sample2ColRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_Sample2ColRadioButtonStateChanged
if (Sample2ColRadioButton.isSelected()) {
Pop1ComboBox.setEnabled(true);
Pop2ComboBox.setEnabled(true);
} else {
Pop1ComboBox.setEnabled(false);
Pop2ComboBox.setEnabled(false);
}
}//GEN-LAST:event_Sample2ColRadioButtonStateChanged
@SuppressWarnings("unchecked")
private void OKButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_OKButtonActionPerformed
app.compoundEdit = new DialogEdit("hypothesis test 2 mean");
int n1 = 0, n2 = 0; // sample sizes
double xBar1 = 0, xBar2 = 0; // sample means
double stdev1 = 0, stdev2 = 0; // sample standard deviations
double confidenceLevel;
String heading = "Hypothesis Test - Two population means:";
String text = "";
if (ConfRadioButton.isSelected()) {
// get confidence level from dialog
try {
confidenceLevel = Double.parseDouble(ConfidenceTextField.getText());
} catch (NumberFormatException e) {
app.showErrorDialog("Enter a number between 0 and 1 for the confidence level.");
return;
}
if (confidenceLevel <= 0 || confidenceLevel >= 1) {
app.showErrorDialog("Enter a number between 0 and 1 for the confidence level.");
return;
}
}
else {
// get confidence level from dialog
try {
confidenceLevel = 1 - Double.parseDouble(SigTextField.getText());
} catch (NumberFormatException e) {
app.showErrorDialog("Enter a number between 0 and 1 for the significance level.");
return;
}
if (confidenceLevel <= 0 || confidenceLevel >= 1) {
app.showErrorDialog("Enter a number between 0 and 1 for the significance level.");
return;
}
}
heading += " confidence level = " +
String.format("%."+
HelperFunctions.getNumDecimalPlaces(ConfidenceTextField.getText())+"f",
confidenceLevel);
// summary values
if (SummaryRadioButton.isSelected()) {
try {
n1 = Integer.parseInt(n1TextField.getText());
n2 = Integer.parseInt(n2TextField.getText());
} catch (NumberFormatException e) {
app.showErrorDialog("Enter an integer for the sample sizes.");
return;
}
try {
xBar1 = Double.parseDouble(mean1TextField.getText());
xBar2 = Double.parseDouble(mean2TextField.getText());
} catch (NumberFormatException e) {
app.showErrorDialog("Enter valid sample means.");
return;
}
if (!SigmaKnownCheckBox.isSelected()) {
try {
stdev1 = Double.parseDouble(stdev1TextField.getText());
stdev2 = Double.parseDouble(stdev2TextField.getText());
} catch (NumberFormatException e) {
app.showErrorDialog("Enter valid sample standard deviations.");
return;
}
}
} else {
Vector Vector1 = null, Vector2 = null;
Vector InputVector1 = null, InputVector2 = null;
// sample values in one column, labels in another
if (Sample1ColRadioButton.isSelected()) {
// get data for the labels column
String columnLabel = LabelsComboBox.getSelectedItem().toString();
text += "Population labels in " + columnLabel + "
";
if (columnLabel.equals("")) { // no labels column
app.showErrorDialog("Select the column containing category labels.");
return;
}
int column = ParentSpreadsheet.parseColumnNumber(columnLabel);
Vector LabelsVector = ParentSpreadsheet.getColumn(column);
//get data for the sample values column
columnLabel = ValuesComboBox.getSelectedItem().toString();
text += "Samples values in " + columnLabel + "
";
if (columnLabel.equals("")) { // no values column
app.showErrorDialog("Select the column containing sample values.");
return;
}
column = ParentSpreadsheet.parseColumnNumber(columnLabel);
Vector ValuesVector = ParentSpreadsheet.getColumn(column);
// split values into two vectors corresponding to the two categories
try {
Object returnValues[] =
HelperFunctions.splitValuesVectorByLabels(LabelsVector, ValuesVector);
text += "Population 1 = " + returnValues[0] + "
";
text += "Population 2 = " + returnValues[2] + "
";
Vector1 = (Vector) returnValues[1];
Vector2 = (Vector) returnValues[3];
InputVector1 =
HelperFunctions.ConvertInputVectorToDoubles(Vector1);
if (InputVector1 == null) {
app.showErrorDialog("Invalid input column " + returnValues[0] +
": all data must be numbers.");
return;
}
InputVector2 =
HelperFunctions.ConvertInputVectorToDoubles(Vector2);
if (InputVector2 == null) {
app.showErrorDialog("Invalid input column " + returnValues[2] +
": all data must be numbers.");
return;
}
} catch (Exception e) {
app.showErrorDialog(e.getMessage());
return;
}
}
// sample values of two populations in separate columns
else if (Sample2ColRadioButton.isSelected()) {
//get data for the two columns of sample values
String columnLabel = Pop1ComboBox.getSelectedItem().toString();
text += "Samples of population 1 in " + columnLabel + "
";
if (columnLabel.equals("")) { // no values column
app.showErrorDialog("Select the column containing sample " +
"values for the first population.");
return;
}
int column = ParentSpreadsheet.parseColumnNumber(columnLabel);
Vector1 = ParentSpreadsheet.getColumn(column);
InputVector1 =
HelperFunctions.ConvertInputVectorToDoubles(Vector1);
if (InputVector1 == null) {
app.showErrorDialog("Invalid input column " + columnLabel +
": all data must be numbers.");
return;
}
columnLabel = Pop2ComboBox.getSelectedItem().toString();
text += "Samples of population 2 in " + columnLabel + "
";
if (columnLabel.equals("")) { // no values column
app.showErrorDialog("Select the column containing sample " +
"values for the second population.");
return;
}
column = ParentSpreadsheet.parseColumnNumber(columnLabel);
Vector2 = ParentSpreadsheet.getColumn(column);
InputVector2 =
HelperFunctions.ConvertInputVectorToDoubles(Vector2);
if (InputVector2 == null) {
app.showErrorDialog("Invalid input column " + columnLabel +
": all data must be numbers.");
return;
}
}
// compute statistics of input vectors
n1 = BasicStatistics.Nnonmissing(InputVector1);
xBar1 = BasicStatistics.mean(InputVector1).doubleValue();
stdev1 = BasicStatistics.stdev(InputVector1).doubleValue();
n2 = BasicStatistics.Nnonmissing(InputVector2);
xBar2 = BasicStatistics.mean(InputVector2).doubleValue();
stdev2 = BasicStatistics.stdev(InputVector2).doubleValue();
}
text += "
";
text += "| | N | Mean | ";
if (!SigmaKnownCheckBox.isSelected())
text += "Stdev | ";
text += " ";
text += "| Population 1 | " + n1 + " | " +
HelperFunctions.formatFloat(xBar1, 3) + " | ";
if (!SigmaKnownCheckBox.isSelected())
text += "" + HelperFunctions.formatFloat(stdev1, 3) + " | ";
text += " ";
text += "| Population 2 | " + n2 + " | " +
HelperFunctions.formatFloat(xBar2, 3) + " | ";
if (!SigmaKnownCheckBox.isSelected())
text += "" + HelperFunctions.formatFloat(stdev2, 3) + " | ";
text += "
";
// get hypothesized difference
double diff = 0;
try {
diff = Double.parseDouble(HyTextField.getText());
}
catch (NumberFormatException e) {
app.showErrorDialog("Enter a valid hypothesized difference.");
return;
}
// get type of test
int typeTest = AltComboBox.getSelectedIndex();
text += "Null hypothesis: μ1 - μ2 = " +
diff + "
";
text += "Alternative hypothesis: μ1 - μ2 ";
if (typeTest == HypothesisTest.LEFT_TAIL)
text += "<";
else if (typeTest == HypothesisTest.RIGHT_TAIL)
text += ">";
else
text += "≠";
text += diff + "
";
if (VarEqualCheckBox.isSelected()) {
text += "* Population variances are assumed equal. *
";
}
if (SigmaKnownCheckBox.isSelected()) {
double sigma1 = 0, sigma2 = 0;
try {
sigma1 = Double.parseDouble(Sigma1TextField.getText());
sigma2 = Double.parseDouble(Sigma2TextField.getText());
text += "* Population standard deviations are known. *
";
text += " &sigma1 = " + sigma1 +
", &sigma2 = " + sigma2;
HypothesisTest2MeanSigmaKnown ht = new
HypothesisTest2MeanSigmaKnown(n1, n2, xBar1, xBar2,
sigma1, sigma2, diff, confidenceLevel, typeTest);
text += "
";
text += "| Significance Level | Critical Value | " +
"Test Statistic Z | " + "p-Value | ";
text += "| " +
HelperFunctions.formatFloat(1-confidenceLevel, 2) +
" | " + ht.criticalValue()
+ " | " + HelperFunctions.formatFloat(ht.testStatistics(), 3)
+ " | " + HelperFunctions.formatFloat(ht.pValue(), 4)
+ " | ";
} catch (NumberFormatException e) {
app.showErrorDialog("Enter valid population standard deviations.");
return;
}
} else {
text += "* Population standard deviations are unknown. *
";
HypothesisTest2MeanSigmaUnknown ht = new
HypothesisTest2MeanSigmaUnknown(n1, n2, xBar1, xBar2,
stdev1, stdev2, diff, confidenceLevel, typeTest,
VarEqualCheckBox.isSelected());
text += "DOF = " + ht.DOF();
text += "
";
text += "| Significance Level | Critical Value | " +
"Test Statistic t | " + "p-Value | ";
text += "| " +
HelperFunctions.formatFloat(1-confidenceLevel, 2) +
" | " + ht.criticalValue()
+ " | " + HelperFunctions.formatFloat(ht.testStatistics(), 3)
+ " | " + HelperFunctions.formatFloat(ht.pValue(), 4)
+ " | ";
}
app.addLogParagraph(heading, text);
app.compoundEdit.end();
app.addCompoundEdit(app.compoundEdit);
setVisible(false);
}//GEN-LAST:event_OKButtonActionPerformed
private void CancelButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_CancelButtonActionPerformed
setVisible(false);
}//GEN-LAST:event_CancelButtonActionPerformed
private void SigmaKnownCheckBoxStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_SigmaKnownCheckBoxStateChanged
if (SigmaKnownCheckBox.isSelected()) {
if (SummaryRadioButton.isSelected()) {
stdev1TextField.setEnabled(false);
stdev2TextField.setEnabled(false);
}
Sigma1TextField.setEnabled(true);
Sigma2TextField.setEnabled(true);
VarEqualCheckBox.setEnabled(false);
} else {
if (SummaryRadioButton.isSelected()) {
stdev1TextField.setEnabled(true);
stdev2TextField.setEnabled(true);
}
Sigma1TextField.setEnabled(false);
Sigma2TextField.setEnabled(false);
VarEqualCheckBox.setEnabled(true);
}
}//GEN-LAST:event_SigmaKnownCheckBoxStateChanged
private void ConfidenceTextFieldFocusLost(java.awt.event.FocusEvent evt) {//GEN-FIRST:event_ConfidenceTextFieldFocusLost
try {
String confString = ConfidenceTextField.getText();
double conf = Double.parseDouble(confString);
double sig = 1.0 - conf;
SigTextField.setText(
String.format("%."+HelperFunctions.getNumDecimalPlaces(confString)+"f", sig));
} catch (NumberFormatException e) {
}
}//GEN-LAST:event_ConfidenceTextFieldFocusLost
private void ConfRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_ConfRadioButtonStateChanged
if (ConfRadioButton.isSelected()) {
ConfidenceTextField.setEnabled(true);
ConfLabel.setEnabled(true);
} else {
ConfidenceTextField.setEnabled(false);
ConfLabel.setEnabled(false);
}
}//GEN-LAST:event_ConfRadioButtonStateChanged
private void SigRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_SigRadioButtonStateChanged
if (SigRadioButton.isSelected()) {
SigTextField.setEnabled(true);
SigLabel.setEnabled(true);
} else {
SigTextField.setEnabled(false);
SigLabel.setEnabled(false);
}
}//GEN-LAST:event_SigRadioButtonStateChanged
private void SigTextFieldFocusLost(java.awt.event.FocusEvent evt) {//GEN-FIRST:event_SigTextFieldFocusLost
try {
String sigString = SigTextField.getText();
double sig = Double.parseDouble(sigString);
double conf = 1 - sig;
ConfidenceTextField.setText(
String.format("%."+HelperFunctions.getNumDecimalPlaces(sigString)+"f", conf));
} catch (NumberFormatException e) {
}
}//GEN-LAST:event_SigTextFieldFocusLost
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JComboBox AltComboBox;
private javax.swing.JButton CancelButton;
private javax.swing.JLabel ConfLabel;
private javax.swing.JRadioButton ConfRadioButton;
private javax.swing.JTextField ConfidenceTextField;
private javax.swing.JTextField HyTextField;
private javax.swing.JComboBox LabelsComboBox;
private javax.swing.JButton OKButton;
private javax.swing.JComboBox Pop1ComboBox;
private javax.swing.JComboBox Pop2ComboBox;
private javax.swing.JRadioButton Sample1ColRadioButton;
private javax.swing.JRadioButton Sample2ColRadioButton;
private javax.swing.JLabel SigLabel;
private javax.swing.JPanel SigPanel;
private javax.swing.JRadioButton SigRadioButton;
private javax.swing.JTextField SigTextField;
private javax.swing.JTextField Sigma1TextField;
private javax.swing.JTextField Sigma2TextField;
private javax.swing.JCheckBox SigmaKnownCheckBox;
private javax.swing.JRadioButton SummaryRadioButton;
private javax.swing.JComboBox ValuesComboBox;
private javax.swing.JCheckBox VarEqualCheckBox;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel10;
private javax.swing.JLabel jLabel11;
private javax.swing.JLabel jLabel14;
private javax.swing.JLabel jLabel15;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JLabel jLabel6;
private javax.swing.JLabel jLabel7;
private javax.swing.JLabel jLabel8;
private javax.swing.JLabel jLabel9;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JPanel jPanel3;
private javax.swing.JTextField mean1TextField;
private javax.swing.JTextField mean2TextField;
private javax.swing.JTextField n1TextField;
private javax.swing.JTextField n2TextField;
private javax.swing.JTextField stdev1TextField;
private javax.swing.JTextField stdev2TextField;
// End of variables declaration//GEN-END:variables
}
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