com.github.chen0040.si.statistics

Class SamplingDistributionOfSampleMeanDifference

java.lang.Object

com.github.chen0040.si.statistics.SamplingDistributionOfSampleMeanDifference

public class SamplingDistributionOfSampleMeanDifference
extends Object

Created by xschen on 3/5/2017. This is the sampling distribution of (x_bar_1 - x_bar_2), where x_bar_1 is the sample mean of group 1 x_bar_2 is the sample mean of group 2 The group id here is referred to as the exploratory variable and is a categorical variable

Constructor Summary

Constructors

Constructor and Description
SamplingDistributionOfSampleMeanDifference(double sampleMean1PointEstimate, double sampleMean2PointEstimate, double sd1, double sd2, int sampleSize1, int sampleSize2, String groupId1, String groupId2)
SamplingDistributionOfSampleMeanDifference(SampleDistribution sampleDistribution1, SampleDistribution sampleDistribution2)

Method Summary

Modifier and Type	Method and Description
ConfidenceInterval	confidenceInterval(double confidenceLevel)
DistributionFamily	getDistributionFamily()
double	getSampleMean1PointEstimate()
double	getSampleMean2PointEstimate()
double	getSampleMeanDifferencePointEstimate()
int	getSampleSize1()
int	getSampleSize2()
double	getStandardError()
double	probability(double x) return the probability density of the sampling distribution at sample mean difference = x
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

SamplingDistributionOfSampleMeanDifference

public SamplingDistributionOfSampleMeanDifference(SampleDistribution sampleDistribution1,
                                                  SampleDistribution sampleDistribution2)

SamplingDistributionOfSampleMeanDifference

public SamplingDistributionOfSampleMeanDifference(double sampleMean1PointEstimate,
                                                  double sampleMean2PointEstimate,
                                                  double sd1,
                                                  double sd2,
                                                  int sampleSize1,
                                                  int sampleSize2,
                                                  String groupId1,
                                                  String groupId2)

Method Detail

getSampleMean1PointEstimate

public double getSampleMean1PointEstimate()

getSampleMean2PointEstimate

public double getSampleMean2PointEstimate()

getSampleMeanDifferencePointEstimate

public double getSampleMeanDifferencePointEstimate()

getStandardError

public double getStandardError()

getSampleSize1

public int getSampleSize1()

getSampleSize2

public int getSampleSize2()

confidenceInterval

public ConfidenceInterval confidenceInterval(double confidenceLevel)

getDistributionFamily

public DistributionFamily getDistributionFamily()

probability

public double probability(double x)

return the probability density of the sampling distribution at sample mean difference = x

Parameters:

x - the value at which to check the probability density

Returns:

probability density of x

toString

public String toString()

Overrides:

toString in class Object