Compute correlation differences and their p-values

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Description

This function takes two correlation values (or matrices of correlation values) and calculate the differences between these values (term by term) and their respective p-values by a Fisher's Z transformation.

Usage

1
compCorr(n1, r1, n2, r2)

Arguments

n1

numerical or matrix of sample sizes for group 1.

r1

numerical or matrix of correlation values for group 1.

n2

numerical or matrix of sample sizes for group 2.

r2

numerical or matrix of correlation values for group 2.

Details

This function use Fisher's Z transformation from scripts adapted from the Internet:
http://ftp.sas.com/techsup/download/stat/compcorr.html
http://www.fon.hum.uva.nl/Service/Statistics/Two_Correlations.html

Value

The result of this function is a list with two numerical items.

diff

matrix (or a single number) of differences between correlation values from two groups

pval

matrix (or a single number) of p-values of differences between the correlation values

Author(s)

Gustavo H. Esteves <gesteves@vision.ime.usp.br>

Examples

1
compCorr(12, 0.9, 16, 0.73)

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