lMvrrc: Lawley multivariate range restriction correction.

In iopsych: Methods for Industrial/Organizational Psychology

Description

Lawley multivariate range restriction correction.

Usage

lMvrrc(rcov, vnp, as_cor = TRUE)

Arguments

rcov	The covariance matrix of the restricted sample.
vnp	The covariance matrix of predictors explicitly used for selection. This matrix should be based on the the unrestricted population.
as_cor	This argument can be set to FALSE to return a covariance matrix.

Value

The the correlation matrix or variance covariance in the unrestricted population.

Author(s)

The original function was written by Adam Beatty and adapted by Allen Goebl.

References

Lawley D. N (1943). A note on Karl Pearson's selection formulae. Proceedings of the Royal Society of Edinburgh., 62(Section A, Pt. 1), 28-30.

Examples

data(rcea1994)
vstar <- rcea1994$vstar
vpp   <- rcea1994$vpp

lMvrrc(rcov=vstar, vnp=vpp)

Example output

           [,1]        [,2]        [,3]       [,4]
[1,] 1.00000000  0.25000000  0.06254509 0.10664023
[2,] 0.25000000  1.00000000 -0.04246105 0.13994188
[3,] 0.06254509 -0.04246105  1.00000000 0.07959423
[4,] 0.10664023  0.13994188  0.07959423 1.00000000

iopsych documentation built on May 2, 2019, 2:27 p.m.