clusterchisq: Chisquare tests of a qualitative variable by several...

In FactoClass: Combination of Factorial Methods and Cluster Analysis

Chisquare tests of a qualitative variable by several qualitative variables

Description

Chisqure tests are performed for the contingency tables crossing a qualitative variable named cl and the qualitative variables present in columns from df

Usage

chisq.carac(df,cl,thr=2,decr=TRUE)

Arguments

df	data.frame, with factors contain the categories of the qualitave variables
cl	factor indicating the category of each subject
thr	threshold of test value, if decr=TRUE, only the rows where tval >= thr are returned
decr	if decr=TRUE the rows are returned in decreasing order

Value

Matrix with the following columns:

chi2	chisquare statistic
dfr	degree of fredom of chisquare densidity
pval	$p$ value
tval	quantil qnorm(pval,lower.tail=FALSE
phi2	phi2=chi2/n

Author(s)

Campo Elias Pardo [e-mail]

Examples

data(DogBreeds)
round(chisq.carac(DogBreeds[,-7],DogBreeds[,7]),3)
round(chisq.carac(DogBreeds[,-7],DogBreeds[,7],decr=FALSE),3)

FactoClass documentation built on Sept. 14, 2023, 1:07 a.m.