com.github.chen0040.si.testing

Class TestingOnProportion

java.lang.Object

com.github.chen0040.si.testing.TestingOnProportion

public class TestingOnProportion
extends Object

Created by xschen on 3/5/2017. H_0: p_null = p_null that is proportion p_null is p_null H_A: p_null != p_null that is the true proportion p_null is not equal p_null

Constructor Summary

Constructors

Constructor and Description
TestingOnProportion()

Method Summary

Modifier and Type	Method and Description
String	getSummary()
void	report()
void	run(String successLabel, double pHat, int sampleSize, double p)
void	run(String successLabel, double pHat, int sampleSize, double pNull, double significanceLevel) The method return the p-value for both one-tail and two-tails testing of proportion of success for a categorical variable
String	toString()
boolean	willRejectH0(double significanceLevel, boolean twoTails) The method reject null hypothesis if the p-value calculated from the sample is smaller than the significance level

Methods inherited from class java.lang.Object

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

Constructor Detail

TestingOnProportion

public TestingOnProportion()

Method Detail

run

public void run(String successLabel,
                double pHat,
                int sampleSize,
                double p)

run

public void run(String successLabel,
                double pHat,
                int sampleSize,
                double pNull,
                double significanceLevel)

The method return the p-value for both one-tail and two-tails testing of proportion of success for a categorical variable

Parameters:

pHat - the point estimate $p_{hat}$ of sample proportion $p_{bar}$

sampleSize - the sample size of sample drawn from the population

pNull - the null value $p_0$ for true $p$ of the population under $H_0$

significanceLevel - the significance level $alpha$ which is usually 0.05

willRejectH0

public boolean willRejectH0(double significanceLevel,
                            boolean twoTails)

The method reject null hypothesis if the p-value calculated from the sample is smaller than the significance level

Parameters:

significanceLevel - the significance level, usually about 0.05

twoTails - true if the testing is two tails; false otherwise

Returns:

true if the null hypothesis H_0 is rejected; false if H_0 fails to be rejected

getSummary

public String getSummary()

toString

public String toString()

Overrides:

toString in class Object

report

public void report()