methodRuleWMW: Function to pick the method for 'wmwTest' given the data and...

In asht: Applied Statistical Hypothesis Tests

Function to pick the method for wmwTest given the data and exact argument.

Description

Inputs x,y,exact, and chooseLimit, and outputs the method, one of 'asymptotic', 'exact.ce', or 'exact.mc'

Usage

methodRuleWMW(x, y, exact, chooseLimit = 5000)

Arguments

x	vector of numeric responses from group 1
y	vector of numeric responses from group 2
exact	logical, should exact methods be used?
chooseLimit	boundary for choosing between methods

Details

Let J=choose(m+n,n) where length(x)=m and length(y)=n. If exact=NULL then return 'exact.ce' if J is less than or equal to chooseLimit, otherwise return 'asymptotic'. If exact=FALSE return 'asymptotic'. If exact=TRUE then return 'exact.ce' if J is less than or equal to chooseLimit, otherwise return 'exact.mc'.

Value

a character vector with one element, either:

asymptotic	for using normal approximations
exact.ce	for using exact methods with complete enumeration
exact.mc	for a Monte Carlo implementation of the exact version of the test

Examples

methodRuleWMW(rnorm(7),rnorm(7),exact=NULL)
methodRuleWMW(rnorm(7),rnorm(8),exact=NULL)

asht documentation built on Aug. 24, 2023, 5:08 p.m.