The Computer Analysis of Factorial Experiments: In Memoriam—Frank Yates

The responses to a recent paper by Dallal in this journal are evaluated by reference to the ideas of Frank Yates. It is concluded that much unnecessary complication has been introduced into the computer analysis of linear models by (1) the imposition of constraints on parameters, (2) neglect of marginality relations in forming hypotheses, and (3) confusion between the form of noncentrality parameters and hypotheses.