Douglas A. Penfield

1971 AERA Conference Summaries: III. Educational Statistics.

Douglas A. Penfield, 1972 .

The Effects of Type I Error Rate and Power of the ANCOVA F Test and Selected Alternatives Under Nonnormality and Variance Heterogeneity

Douglas A. Penfield, D. A. Penfield, David C. Rheinheimer, 2001 .

Nonparametric classification based upon inverse normal scores and rank transformations

Stephen L. Koffler, Douglas A. Penfield, D. A. Penfield, 1982 .