varAV {psychometric} | R Documentation |
Since the presence of artifacts may inflate the observed variance in correlations, one needs to compute the variance attributed to the artifacts.
varAV(x)
x |
A matrix or data.frame with columns Rxy, n and artifacts (Rxx, Ryy, u):
see EnterMeta |
varAV is computed as rhoCA
^2 * CAFAA
^2 * CVF
varAV is used to compute the residual variance in correlations varResT
A numeric value representing the variance due to attenuating artifacts
Thomas D. Fletcher tom.fletcher.mp7e@statefarm.com
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.
# From Arthur et al data(ABHt32) varAV(ABHt32) # From Hunter et al data(HSJt35) varAV(HSJt35)