/*
* HyTest1PopVarDialog.java
*
* Created on May 30, 2008, 9:55 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 testing claims about a population variance or standard deviation.
* Allows the user to specify data samples in a column of a Datasheet,
* or provide summary data values. The user must also provide
* the confidence level, alternative hypothesis, and hypothesized variance or
* standard deviation.
* 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.HypothesisTest1Var
* @since 1.0
*/
public class HyTest1PopVarDialog extends StatcatoDialog {
/** Creates new form HyTest1PopVarDialog */
public HyTest1PopVarDialog(java.awt.Frame parent, boolean modal,
Statcato mTab) {
super(parent, modal);
initComponents();
app = mTab;
ParentSpreadsheet = app.getSpreadsheet();
ButtonGroup group1 = new ButtonGroup();
group1.add(SampleRadioButton);
group1.add(SummaryRadioButton);
ButtonGroup group2 = new ButtonGroup();
group2.add(VarRadioButton);
group2.add(StdevRadioButton);
ButtonGroup group3 = new ButtonGroup();
group3.add(HyVarRadioButton);
group3.add(HyStdevRadioButton);
ButtonGroup group4 = new ButtonGroup();
group4.add(SigRadioButton);
group4.add(ConfRadioButton);
ParentSpreadsheet.populateComboBox(ColumnComboBox);
getRootPane().setDefaultButton(OKButton);
setHelpFile("stat-hytest-var");
name = "Hypothesis Test: 1-Population Variance";
description = "For performing calculations for testing claims " +
"about a population variance (or standard deviation).";
helpStrings.add("If individual samples are entered in a single " +
"column of the datasheet, select the Samples in column: radio " +
"button, and select the column name in the drop-down menu.");
helpStrings.add("To use summary statistics of the sample data, " +
"select the Summarized sample data: radio button, " +
"and input the sample size and the sample variance " +
"or standard deviation.");
helpStrings.add("Enter the significance or confidence level (between 0 and 1) ");
helpStrings.add("Select the form of the alternative " +
"hypothesis and enter the hypothesized population variance " +
"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(ColumnComboBox);
}
/** 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();
VarRadioButton = new javax.swing.JRadioButton();
SampleSizeTextField = new javax.swing.JTextField();
SampleVarTextField = new javax.swing.JTextField();
ColumnComboBox = new javax.swing.JComboBox();
SampleStdevTextField = new javax.swing.JTextField();
SampleSizeLabel = new javax.swing.JLabel();
SampleRadioButton = new javax.swing.JRadioButton();
SummaryRadioButton = new javax.swing.JRadioButton();
StdevRadioButton = new javax.swing.JRadioButton();
jPanel3 = new javax.swing.JPanel();
HyStdevRadioButton = new javax.swing.JRadioButton();
AltComboBox = new javax.swing.JComboBox();
jLabel3 = new javax.swing.JLabel();
HyStdevTextField = new javax.swing.JTextField();
HyVarTextField = new javax.swing.JTextField();
HyVarRadioButton = new javax.swing.JRadioButton();
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: 1-Population Variance");
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"));
VarRadioButton.setSelected(true);
VarRadioButton.setText("Variance:");
VarRadioButton.setEnabled(false);
VarRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
public void stateChanged(javax.swing.event.ChangeEvent evt) {
VarRadioButtonStateChanged(evt);
}
});
SampleSizeTextField.setEnabled(false);
SampleVarTextField.setEnabled(false);
SampleStdevTextField.setEnabled(false);
SampleSizeLabel.setText("Sample Size:");
SampleSizeLabel.setEnabled(false);
SampleRadioButton.setSelected(true);
SampleRadioButton.setText("Samples in column:");
SampleRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
public void stateChanged(javax.swing.event.ChangeEvent evt) {
SampleRadioButtonStateChanged(evt);
}
});
SummaryRadioButton.setText("Summarized sample data:");
SummaryRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
public void stateChanged(javax.swing.event.ChangeEvent evt) {
SummaryRadioButtonStateChanged(evt);
}
});
StdevRadioButton.setText("Standard deviation:");
StdevRadioButton.setEnabled(false);
StdevRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
public void stateChanged(javax.swing.event.ChangeEvent evt) {
StdevRadioButtonStateChanged(evt);
}
});
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(65, 65, 65)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(SampleSizeLabel)
.addComponent(VarRadioButton)
.addComponent(StdevRadioButton))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(SampleSizeTextField, javax.swing.GroupLayout.PREFERRED_SIZE, 75, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(SampleVarTextField, javax.swing.GroupLayout.PREFERRED_SIZE, 79, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(SampleStdevTextField, javax.swing.GroupLayout.PREFERRED_SIZE, 85, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addComponent(SummaryRadioButton)
.addComponent(SampleRadioButton)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(21, 21, 21)
.addComponent(ColumnComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, 135, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap(39, Short.MAX_VALUE))
);
jPanel1Layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {SampleSizeTextField, SampleStdevTextField, SampleVarTextField});
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addComponent(SampleRadioButton)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(ColumnComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(SummaryRadioButton)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(SampleSizeLabel)
.addComponent(SampleSizeTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(14, 14, 14)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(SampleVarTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(VarRadioButton))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(SampleStdevTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(StdevRadioButton))
.addContainerGap(26, Short.MAX_VALUE))
);
jPanel3.setBorder(javax.swing.BorderFactory.createTitledBorder("Alternative Hypothesis"));
HyStdevRadioButton.setText("Hypothesized standard deviation:");
HyStdevRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
public void stateChanged(javax.swing.event.ChangeEvent evt) {
HyStdevRadioButtonStateChanged(evt);
}
});
AltComboBox.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Less than", "Not Equal to", "Greater than" }));
AltComboBox.setSelectedIndex(1);
jLabel3.setText("Alternative Hypothesis:");
HyStdevTextField.setEnabled(false);
HyVarRadioButton.setSelected(true);
HyVarRadioButton.setText("Hypothesized variance:");
HyVarRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
public void stateChanged(javax.swing.event.ChangeEvent evt) {
HyVarRadioButtonStateChanged(evt);
}
});
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()
.addComponent(jLabel3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(AltComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel3Layout.createSequentialGroup()
.addGap(19, 19, 19)
.addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel3Layout.createSequentialGroup()
.addComponent(HyStdevRadioButton)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(HyStdevTextField, javax.swing.GroupLayout.PREFERRED_SIZE, 82, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel3Layout.createSequentialGroup()
.addComponent(HyVarRadioButton)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(HyVarTextField, javax.swing.GroupLayout.PREFERRED_SIZE, 72, javax.swing.GroupLayout.PREFERRED_SIZE)))))
.addContainerGap())
);
jPanel3Layout.setVerticalGroup(
jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel3Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.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.BASELINE)
.addComponent(HyVarRadioButton)
.addComponent(HyVarTextField, 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.BASELINE)
.addComponent(HyStdevRadioButton)
.addComponent(HyStdevTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap())
);
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)
.addGroup(SigPanelLayout.createSequentialGroup()
.addComponent(ConfRadioButton)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 10, Short.MAX_VALUE)
.addComponent(ConfidenceTextField, javax.swing.GroupLayout.PREFERRED_SIZE, 81, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(SigPanelLayout.createSequentialGroup()
.addComponent(SigRadioButton)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 10, Short.MAX_VALUE)
.addComponent(SigTextField, javax.swing.GroupLayout.PREFERRED_SIZE, 79, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(SigPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(SigLabel)
.addComponent(ConfLabel))
.addContainerGap())
);
SigPanelLayout.setVerticalGroup(
SigPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(SigPanelLayout.createSequentialGroup()
.addGap(6, 6, 6)
.addGroup(SigPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(SigRadioButton)
.addComponent(SigLabel)
.addComponent(SigTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(SigPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(ConfRadioButton)
.addComponent(ConfLabel)
.addComponent(ConfidenceTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, 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()
.addContainerGap()
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(SigPanel, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGap(11, 11, 11))
.addGroup(layout.createSequentialGroup()
.addComponent(jPanel3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addContainerGap())))
.addGroup(layout.createSequentialGroup()
.addGap(258, 258, 258)
.addComponent(OKButton)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(CancelButton)
.addContainerGap(293, 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()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(SigPanel, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jPanel3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addComponent(jPanel1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(OKButton)
.addComponent(CancelButton))
.addContainerGap())
);
pack();
}// //GEN-END:initComponents
private void OKButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_OKButtonActionPerformed
app.compoundEdit = new DialogEdit("hypothesis test 1 variance");
int n = 0, typeTest;
double s = 0, s2 = 0, confidenceLevel;
double s_0 = 0, s2_0 = 0;
Vector ColumnVector = new Vector();
String heading = "Hypothesis Test - One population variance:";
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);
// get input
if (SampleRadioButton.isSelected()) {
// get data for selected input column
String columnLabel = ColumnComboBox.getSelectedItem().toString();
if (columnLabel.equals("")) { // no input variable
app.showErrorDialog("Select the input column.");
return;
}
int column = ParentSpreadsheet.parseColumnNumber(columnLabel);
Vector StrColumnVector = ParentSpreadsheet.getColumn(column);
ColumnVector = HelperFunctions.ConvertInputVectorToDoubles(StrColumnVector);
if (ColumnVector == null) {
app.showErrorDialog("Invalid input column " + columnLabel +
": all data must be numbers.");
return;
}
text += "Input: " + columnLabel + "
";
n = BasicStatistics.Nnonmissing(ColumnVector);
s2 = BasicStatistics.variance(ColumnVector).doubleValue();
s = BasicStatistics.stdev(ColumnVector).doubleValue();
} else {
// get summary data
try {
n = Integer.parseInt(SampleSizeTextField.getText());
if (VarRadioButton.isSelected()) {
s2 = Double.parseDouble(SampleVarTextField.getText());
s = Math.sqrt(s2);
} else {
s = Double.parseDouble(SampleStdevTextField.getText());
s2 = s * s;
}
} catch (NumberFormatException e) {
app.showErrorDialog("Invalid summary data.");
return;
}
text += "Input: Summary data" + "
";
}
// get hypothesized variance
if (HyVarRadioButton.isSelected()) {
try {
s2_0 = Double.parseDouble(HyVarTextField.getText());
s_0 = Math.sqrt(s2_0);
}
catch (NumberFormatException e) {
app.showErrorDialog("Enter a valid number for the hypothesized variance.");
return;
}
}
else { // get hypothesized standard deviation
try {
s_0 = Double.parseDouble(HyStdevTextField.getText());
s2_0 = s_0 * s_0;
}
catch (NumberFormatException e) {
app.showErrorDialog("Enter a valid number for the hypothesized " +
"standard deviation.");
return;
}
}
// get type of test
typeTest = AltComboBox.getSelectedIndex();
HypothesisTest1Var ht = new HypothesisTest1Var(n, s2_0, confidenceLevel, typeTest);
// outputs
text += "Null hypothesis: σ2 = " + s2_0 + "
";
text += "Alternative hypothesis: σ2 ";
if (typeTest == HypothesisTest.LEFT_TAIL)
text += "<";
else if (typeTest == HypothesisTest.RIGHT_TAIL)
text += ">";
else
text += "≠";
text += " " + s2_0 + "
";
text += "
";
text += "N Sample Stdev s Sample Var s2 ";
text += "Significance Level Critical Value " +
"Test Statistic " + "p-Value " + n + " " +
HelperFunctions.formatFloat(s, 3) + " " +
HelperFunctions.formatFloat(s2, 3) + " " +
HelperFunctions.formatFloat(1-confidenceLevel, 2) +
" " + ht.criticalValue()
+ " " + HelperFunctions.formatFloat(ht.testStatistics(s2), 3)
+ " " + HelperFunctions.formatFloat(ht.pValue(s2), 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 SampleRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_SampleRadioButtonStateChanged
if (SampleRadioButton.isSelected()) {
ColumnComboBox.setEnabled(true);
} else {
ColumnComboBox.setEnabled(false);
}
}//GEN-LAST:event_SampleRadioButtonStateChanged
private void SummaryRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_SummaryRadioButtonStateChanged
if (SummaryRadioButton.isSelected()) {
SampleSizeLabel.setEnabled(true);
SampleSizeTextField.setEnabled(true);
SampleStdevTextField.setEnabled(false);
SampleVarTextField.setEnabled(true);
VarRadioButton.setEnabled(true);
StdevRadioButton.setEnabled(true);
VarRadioButton.setSelected(true);
} else {
SampleSizeLabel.setEnabled(false);
SampleSizeTextField.setEnabled(false);
VarRadioButton.setEnabled(false);
StdevRadioButton.setEnabled(false);
SampleStdevTextField.setEnabled(false);
SampleVarTextField.setEnabled(false);
}
}//GEN-LAST:event_SummaryRadioButtonStateChanged
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
private void VarRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_VarRadioButtonStateChanged
if (VarRadioButton.isSelected()) {
if (SummaryRadioButton.isSelected())
SampleVarTextField.setEnabled(true);
}
else
SampleVarTextField.setEnabled(false);
}//GEN-LAST:event_VarRadioButtonStateChanged
private void StdevRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_StdevRadioButtonStateChanged
if (StdevRadioButton.isSelected()) {
if (SummaryRadioButton.isSelected())
SampleStdevTextField.setEnabled(true);
}
else
SampleStdevTextField.setEnabled(false);
}//GEN-LAST:event_StdevRadioButtonStateChanged
private void HyVarRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_HyVarRadioButtonStateChanged
if (HyVarRadioButton.isSelected())
HyVarTextField.setEnabled(true);
else
HyVarTextField.setEnabled(false);
}//GEN-LAST:event_HyVarRadioButtonStateChanged
private void HyStdevRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_HyStdevRadioButtonStateChanged
if (HyStdevRadioButton.isSelected())
HyStdevTextField.setEnabled(true);
else
HyStdevTextField.setEnabled(false);
}//GEN-LAST:event_HyStdevRadioButtonStateChanged
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JComboBox AltComboBox;
private javax.swing.JButton CancelButton;
private javax.swing.JComboBox ColumnComboBox;
private javax.swing.JLabel ConfLabel;
private javax.swing.JRadioButton ConfRadioButton;
private javax.swing.JTextField ConfidenceTextField;
private javax.swing.JRadioButton HyStdevRadioButton;
private javax.swing.JTextField HyStdevTextField;
private javax.swing.JRadioButton HyVarRadioButton;
private javax.swing.JTextField HyVarTextField;
private javax.swing.JButton OKButton;
private javax.swing.JRadioButton SampleRadioButton;
private javax.swing.JLabel SampleSizeLabel;
private javax.swing.JTextField SampleSizeTextField;
private javax.swing.JTextField SampleStdevTextField;
private javax.swing.JTextField SampleVarTextField;
private javax.swing.JLabel SigLabel;
private javax.swing.JPanel SigPanel;
private javax.swing.JRadioButton SigRadioButton;
private javax.swing.JTextField SigTextField;
private javax.swing.JRadioButton StdevRadioButton;
private javax.swing.JRadioButton SummaryRadioButton;
private javax.swing.JRadioButton VarRadioButton;
private javax.swing.JLabel jLabel3;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel3;
// End of variables declaration//GEN-END:variables
}
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