com.itemanalysis.psychometrics.irt.equating

Class MeanSigmaMethod

java.lang.Object

com.itemanalysis.psychometrics.irt.equating.MeanSigmaMethod

All Implemented Interfaces:

LinearTransformation

public class MeanSigmaMethod
extends java.lang.Object
implements LinearTransformation

Constructor Summary

Constructors

Constructor and Description
MeanSigmaMethod(java.util.LinkedHashMap<java.lang.String,ItemResponseModel> itemFormX, java.util.LinkedHashMap<java.lang.String,ItemResponseModel> itemFormY, boolean populationStdDev)

Method Summary

Modifier and Type	Method and Description
double	getIntercept()
double	getScale()
void	setPrecision(int precision)
double	transform(double x)

Methods inherited from class java.lang.Object

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

Constructor Detail

MeanSigmaMethod

public MeanSigmaMethod(java.util.LinkedHashMap<java.lang.String,ItemResponseModel> itemFormX,
                       java.util.LinkedHashMap<java.lang.String,ItemResponseModel> itemFormY,
                       boolean populationStdDev)
                throws org.apache.commons.math3.exception.DimensionMismatchException

Throws:

org.apache.commons.math3.exception.DimensionMismatchException

Method Detail

getIntercept

public double getIntercept()

Specified by:

getIntercept in interface LinearTransformation

getScale

public double getScale()

Specified by:

getScale in interface LinearTransformation

setPrecision

public void setPrecision(int precision)

transform

public double transform(double x)

Specified by:

transform in interface LinearTransformation