/*
* CI2PopVarDialog.java
*
* Created on June 12, 2008, 3:49 PM
*/
package org.statcato.dialogs.stat.ci;
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 creating confidence intervals for two population variances,
* given the confidence level.
* Allows the user to specify the data values in the Datasheet or provide
* summary data.
*
* @author Margaret Yau
* @version %I%, %G%
* @see org.statcato.statistics.inferential.CI2PopVar
* @since 1.0
*/
public class CI2PopVarDialog extends StatcatoDialog {
/** Creates new form CI2PopVarDialog */
public CI2PopVarDialog(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 group2 = new ButtonGroup();
group2.add(VarRadioButton);
group2.add(StdevRadioButton);
ParentSpreadsheet.populateComboBox(LabelsComboBox);
ParentSpreadsheet.populateComboBox(ValuesComboBox);
ParentSpreadsheet.populateComboBox(Pop1ComboBox);
ParentSpreadsheet.populateComboBox(Pop2ComboBox);
getRootPane().setDefaultButton(OKButton);
setHelpFile("stat-ci-2var");
name = "Confidence Interval: Two Population Variances";
description = "For computing the confidence intervals for the ratio of " +
"two population variances.";
helpStrings.add("The sample data can be inputted 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 and standard " +
"deviation/variance of each sample are provided " +
"(instead of individual sample values).");
helpStrings.add("The confidence level must be between 0 and 1. ");
}
/**
* 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();
ConfidenceTextField = new javax.swing.JTextField();
jLabel13 = new javax.swing.JLabel();
jLabel12 = new javax.swing.JLabel();
jPanel2 = new javax.swing.JPanel();
Pop2ComboBox = new javax.swing.JComboBox();
jLabel3 = new javax.swing.JLabel();
jLabel1 = new javax.swing.JLabel();
ValuesComboBox = new javax.swing.JComboBox();
Sample2ColRadioButton = new javax.swing.JRadioButton();
jLabel4 = new javax.swing.JLabel();
LabelsComboBox = new javax.swing.JComboBox();
jLabel2 = new javax.swing.JLabel();
Pop1ComboBox = new javax.swing.JComboBox();
Sample1ColRadioButton = new javax.swing.JRadioButton();
jLabel6 = new javax.swing.JLabel();
jLabel5 = new javax.swing.JLabel();
n1TextField = new javax.swing.JTextField();
n2TextField = new javax.swing.JTextField();
jLabel7 = new javax.swing.JLabel();
SummaryRadioButton = new javax.swing.JRadioButton();
StdevRadioButton = new javax.swing.JRadioButton();
VarRadioButton = new javax.swing.JRadioButton();
Var1TextField = new javax.swing.JTextField();
Stdev1TextField = new javax.swing.JTextField();
Stdev2TextField = new javax.swing.JTextField();
Var2TextField = new javax.swing.JTextField();
setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
setTitle("Confidence Interval: 2-Population Variances");
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("Confidence"));
ConfidenceTextField.setText("0.95");
jLabel13.setText("0 - 1.00 (e.g. 0.95)");
jLabel12.setText("Confidence Level:");
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()
.addComponent(jLabel12)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(ConfidenceTextField, javax.swing.GroupLayout.PREFERRED_SIZE, 83, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jLabel13)
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel12)
.addComponent(ConfidenceTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel13))
.addContainerGap())
);
jPanel2.setBorder(javax.swing.BorderFactory.createTitledBorder("Inputs"));
Pop2ComboBox.setEnabled(false);
jLabel3.setText("Population 1:");
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);
}
});
jLabel4.setText("Population 2:");
jLabel2.setText("Values in column:");
Pop1ComboBox.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);
}
});
jLabel6.setText("Population 2:");
jLabel5.setText("Population 1:");
n1TextField.setEnabled(false);
n2TextField.setEnabled(false);
jLabel7.setText("Sample Size");
SummaryRadioButton.setText("Summarized sample data");
SummaryRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
public void stateChanged(javax.swing.event.ChangeEvent evt) {
SummaryRadioButtonStateChanged(evt);
}
});
StdevRadioButton.setSelected(true);
StdevRadioButton.setText("Standard Deviation");
StdevRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
public void stateChanged(javax.swing.event.ChangeEvent evt) {
StdevRadioButtonStateChanged(evt);
}
});
VarRadioButton.setText("Variance");
VarRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
public void stateChanged(javax.swing.event.ChangeEvent evt) {
VarRadioButtonStateChanged(evt);
}
});
Var1TextField.setEnabled(false);
Stdev1TextField.setEnabled(false);
Stdev2TextField.setEnabled(false);
Var2TextField.setEnabled(false);
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)
.addGroup(jPanel2Layout.createSequentialGroup()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addGap(21, 21, 21)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel6)
.addComponent(jLabel5))
.addGap(35, 35, 35)
.addGroup(jPanel2Layout.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, javax.swing.GroupLayout.Alignment.LEADING)))
.addComponent(SummaryRadioButton))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(StdevRadioButton)
.addGroup(jPanel2Layout.createSequentialGroup()
.addGap(29, 29, 29)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(Stdev1TextField)
.addComponent(Stdev2TextField))))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel2Layout.createSequentialGroup()
.addComponent(VarRadioButton)
.addGap(0, 64, Short.MAX_VALUE))
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel2Layout.createSequentialGroup()
.addGap(29, 29, 29)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(Var2TextField, javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(Var1TextField)))))
.addComponent(Sample1ColRadioButton)
.addComponent(Sample2ColRadioButton)
.addGroup(jPanel2Layout.createSequentialGroup()
.addGap(21, 21, 21)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel2Layout.createSequentialGroup()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel1)
.addComponent(jLabel2))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel2Layout.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, jPanel2Layout.createSequentialGroup()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel4)
.addComponent(jLabel3))
.addGap(26, 26, 26)
.addGroup(jPanel2Layout.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))))))
.addContainerGap())
);
jPanel2Layout.setVerticalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel2Layout.createSequentialGroup()
.addContainerGap()
.addComponent(Sample1ColRadioButton)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel2Layout.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(jPanel2Layout.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(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel4, javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addGroup(jPanel2Layout.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)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 16, Short.MAX_VALUE)
.addComponent(SummaryRadioButton)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(StdevRadioButton)
.addComponent(VarRadioButton)
.addComponent(jLabel7))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(Var1TextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(Stdev2TextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(Var2TextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(jPanel2Layout.createSequentialGroup()
.addGap(25, 25, 25)
.addGroup(jPanel2Layout.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(Stdev1TextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel2Layout.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))))
.addContainerGap())
);
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()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.addGroup(layout.createSequentialGroup()
.addGap(131, 131, 131)
.addComponent(OKButton)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(CancelButton)))
.addContainerGap(15, 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()
.addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(CancelButton)
.addComponent(OKButton))
.addContainerGap(12, 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);
if (StdevRadioButton.isSelected()) {
Stdev1TextField.setEnabled(true);
Stdev2TextField.setEnabled(true);
Var1TextField.setEnabled(false);
Var2TextField.setEnabled(false);
}
else {
Stdev1TextField.setEnabled(false);
Stdev2TextField.setEnabled(false);
Var1TextField.setEnabled(true);
Var2TextField.setEnabled(true);
}
} else {
n1TextField.setEnabled(false);
n2TextField.setEnabled(false);
Stdev1TextField.setEnabled(false);
Stdev2TextField.setEnabled(false);
Var1TextField.setEnabled(false);
Var2TextField.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("CI 2 variance");
int n1 = 0, n2 = 0; // sample sizes
double var1 = 0, var2 = 0; // sample variances
double stdev1 = 0, stdev2 = 0; // sample standard deviations
double confidenceLevel;
String heading = "Confidence Intervals - Two population variances:";
String text = "";
// 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;
}
heading += " confidence level = " + confidenceLevel;
// summary values
if (SummaryRadioButton.isSelected()) {
try {
n1 = Integer.parseInt(n1TextField.getText());
n2 = Integer.parseInt(n2TextField.getText());
if (n1 < 1 || n2 < 1)
throw new NumberFormatException();
} catch (NumberFormatException e) {
app.showErrorDialog("Enter a positive integer for the sample sizes.");
return;
}
if (StdevRadioButton.isSelected()) {
try {
stdev1 = Double.parseDouble(Stdev1TextField.getText());
stdev2 = Double.parseDouble(Stdev2TextField.getText());
if (stdev1 < 0 || stdev2 < 0)
throw new NumberFormatException();
var1 = stdev1 * stdev1;
var2 = stdev2 * stdev2;
} catch (NumberFormatException e) {
app.showErrorDialog("Enter valid sample standard deviations.");
return;
}
}
else {
try {
var1 = Double.parseDouble(Var1TextField.getText());
var2 = Double.parseDouble(Var2TextField.getText());
if (var1 < 0 || var2 < 0)
throw new NumberFormatException();
stdev1 = Math.sqrt(var1);
stdev2 = Math.sqrt(var2);
}
catch (NumberFormatException e) {
app.showErrorDialog("Enter valid sample variances.");
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);
var1 = BasicStatistics.variance(InputVector1).doubleValue();
stdev1 = BasicStatistics.stdev(InputVector1).doubleValue();
n2 = BasicStatistics.Nnonmissing(InputVector2);
var2 = BasicStatistics.variance(InputVector2).doubleValue();
stdev2 = BasicStatistics.stdev(InputVector2).doubleValue();
}
text += "
";
text += " N ";
text += "Stdev Variance ";
text += "Population 1 " + n1 + " " +
HelperFunctions.formatFloat(stdev1, 5) + " " +
"" + HelperFunctions.formatFloat(var1, 5) + " ";
text += "Population 2 " + n2 + " " +
HelperFunctions.formatFloat(stdev2, 5) + " "+
"" + HelperFunctions.formatFloat(var2, 5) + " ";
text += "
";
CI2PopVar CI = new CI2PopVar(confidenceLevel, n1, n2, var1, var2);
text += "Left critical value FL = " +
HelperFunctions.formatFloat(CI.criticalValueLeft(), 4) + "
";
text += "Right critical value FR = " +
HelperFunctions.formatFloat(CI.criticalValueRight(), 4) + "
";
text += HelperFunctions.formatFloat(confidenceLevel * 100, 2) +
"%CI Variance Ratio (σ12 / " +
"σ22) = "
+ CI.CIVar() + "
";
text += HelperFunctions.formatFloat(confidenceLevel * 100, 2) +
"%CI Standard Deviation Ratio (σ1 / " +
"σ2) = "
+ CI.CIStdev();
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 VarRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_VarRadioButtonStateChanged
if (VarRadioButton.isSelected()) {
if (SummaryRadioButton.isSelected()) {
Var1TextField.setEnabled(true);
Var2TextField.setEnabled(true);
}
else {
Var1TextField.setEnabled(false);
Var2TextField.setEnabled(false);
}
}
else {
Var1TextField.setEnabled(false);
Var2TextField.setEnabled(false);
}
}//GEN-LAST:event_VarRadioButtonStateChanged
private void StdevRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_StdevRadioButtonStateChanged
if (StdevRadioButton.isSelected()) {
if (SummaryRadioButton.isSelected()) {
Stdev1TextField.setEnabled(true);
Stdev2TextField.setEnabled(true);
}
else {
Stdev1TextField.setEnabled(false);
Stdev2TextField.setEnabled(false);
}
}
else {
Stdev1TextField.setEnabled(false);
Stdev2TextField.setEnabled(false);
}
}//GEN-LAST:event_StdevRadioButtonStateChanged
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JButton CancelButton;
private javax.swing.JTextField ConfidenceTextField;
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.JTextField Stdev1TextField;
private javax.swing.JTextField Stdev2TextField;
private javax.swing.JRadioButton StdevRadioButton;
private javax.swing.JRadioButton SummaryRadioButton;
private javax.swing.JComboBox ValuesComboBox;
private javax.swing.JTextField Var1TextField;
private javax.swing.JTextField Var2TextField;
private javax.swing.JRadioButton VarRadioButton;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel12;
private javax.swing.JLabel jLabel13;
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.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JTextField n1TextField;
private javax.swing.JTextField n2TextField;
// End of variables declaration//GEN-END:variables
}
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