com.itemanalysis.psychometrics.measurement

Class ClassicalItemSummary

java.lang.Object

com.itemanalysis.psychometrics.measurement.ClassicalItemSummary

public class ClassicalItemSummary
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
ClassicalItemSummary(VariableAttributes variableAttributes, boolean correctForSupriousness, boolean allCategories, DiscriminationType discriminationType)

Method Summary

Modifier and Type	Method and Description
boolean	allCategories()
java.lang.String	getDifficultyFlag()
double	getDindexLowerMean()
double	getDindexUpperMean()
java.lang.String	getDiscriminationFlag(double discrim)
java.lang.String	getFooter()
java.lang.String	getHeader()
double	getItemDifficulty()
double	getItemDiscrimination()
double	getItemStandardDeviation()
java.lang.Object[]	getOptionOutputArray() Create an Object array that contains the statistics for every options for this item.
void	increment(java.lang.String response, double testScore)
void	incrementDindex(java.lang.String response, double testScore, double lowerCut, double upperCut)
int	numberOfCategories()
void	setHighDiscrimination(double highDiscrimination)
void	setHighPvalue(double highPvalue)
void	setLowDiscrimination(double lowDiscrimination)
void	setLowPvalue(double lowPvalue)
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ClassicalItemSummary

public ClassicalItemSummary(VariableAttributes variableAttributes,
                            boolean correctForSupriousness,
                            boolean allCategories,
                            DiscriminationType discriminationType)

Method Detail

increment

public void increment(java.lang.String response,
                      double testScore)

incrementDindex

public void incrementDindex(java.lang.String response,
                            double testScore,
                            double lowerCut,
                            double upperCut)

setLowPvalue

public void setLowPvalue(double lowPvalue)

setHighPvalue

public void setHighPvalue(double highPvalue)

setLowDiscrimination

public void setLowDiscrimination(double lowDiscrimination)

setHighDiscrimination

public void setHighDiscrimination(double highDiscrimination)

getOptionOutputArray

public java.lang.Object[] getOptionOutputArray()

Create an Object array that contains the statistics for every options for this item. This method is mainly used for creating printable output.

Returns:

array of item statistics.

allCategories

public boolean allCategories()

numberOfCategories

public int numberOfCategories()

getItemDifficulty

public double getItemDifficulty()

getItemStandardDeviation

public double getItemStandardDeviation()

getItemDiscrimination

public double getItemDiscrimination()

getDindexLowerMean

public double getDindexLowerMean()

getDindexUpperMean

public double getDindexUpperMean()

getDifficultyFlag

public java.lang.String getDifficultyFlag()

getDiscriminationFlag

public java.lang.String getDiscriminationFlag(double discrim)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getHeader

public java.lang.String getHeader()

getFooter

public java.lang.String getFooter()