Question:

The statistical technique of meta-analysis:

A.

Estimates the amount of sampling error in one study to derive a more accurate estimate of the validity coefficient

B.

Changes the magnitude of the validity coefficient by removing the effect of the sampling error

C.

Changes the estimated variance in observed coefficients and hence widens the confidence interval around the mean coefficient

D.

Cumulates the results from many separate studies to obtain a more stable indication of the effect under investigation

Answer» d. Cumulates the results from many separate studies to obtain a more stable indication of the effect under investigation