Meaning of D̅ in Overall and Dalal's Formula for Sample Size in Analysis of Variance Designs

Feldt L. W. Mahmoud M. W. Power function charts for specification of sample size in analysis of variance. Psychometrika, 1958, 23, 201–210.

Hays W. L. Statistics for psychologists. New York: Holt, Rinehart, & Winston, 1963.

Overall J. E. Dalal S. N. Empirical formulae for estimating appropriate sample sizes for analysis of variance designs. Perceptual and Motor Skills, 1968, 27, 363–367.

Tang P. C. The power function of the analysis of variance tests with tables and illustration of their use. Statistical Research Memoirs, 1938, 2, 143.