varRCA {psychometric}

Variance in Meta-Analytic Rho

Description

Computes the estimate of the variance in the corrected correlation coefficient.

Usage

varRCA(x, aprox = FALSE)

Arguments

x

A matrix or data.frame with columns Rxy, n and artifacts (Rxx, Ryy, u): see EnterMeta

aprox

Logical test to determine if the approximate or exact var e is used

Details

Variance in Rho is computed as: \code{VarResT} / \code{CAFFA}^2

This is used to construct credibility intervals for rho CredIntRho

Value

A numeric value representing the variance in the population correlation coefficient

Author(s)

Thomas D. Fletcher [e-mail]

References

Arthur, Jr., W., Bennett, Jr., W., and Huffcutt, A. I. (2001) Conducting Meta-analysis using SAS. Mahwah, NJ: Erlbaum.

Hunter, J.E. and Schmidt, F.L. (2004). Methods of meta-analysis: Correcting error and bias in research findings (2nd ed.). Thousand Oaks: Sage Publications.

Hunter, J.E., Schmidt, F.L., and Jackson, G.B. (1982). Meta-analysis: Cumulating research findings across studies. Beverly Hills: Sage Publications.

See Also

rhoCA, CAFAA, varResT, varRes CredIntRho

Examples

# From Arthur et al
data(ABHt32)
varRCA(ABHt32)

# From Hunter et al
data(HSJt35)
varRCA(HSJt35)