FCAmet {PTAk}

Tool used in Generalisation of Correspondence Analysis for k-way tables

Description

Computes the ratio Observed/Expected under complete independence with margins of the multiple contingency table (in frequencies) and gives chi2 statistic of lack of complete independence.

Usage

 FCAmet(X,chi2=FALSE,E=NULL,No0margins=TRUE)

Arguments

X

a multiple contingency table (array) of order k

chi2

if TRUE prints the chi2 statistic information

E

if not NULL represent a model which would be used for an FCAk relatively to a model

No0margins

if TRUE, prevents zero margins in replacing cells involved by the min of the non-zero margins /nb of zero cells

Value

a list with

data

an array (X/count (-E))/Indepen where Indepen is the array obtained from he products of the margins

met

a list wherein each entry is the vector of the corresponding margins i.e. apply(X,i,sum)/count

count

is the total sum sum(X).

Note

The statistics and metrics do not depend on E. The statistic given measure only the lack of independence.

Author(s)

Didier G. Leibovici

See Also

FCAk