Dear Paige, Would you mind explaining how widely differing cell sizes in an anova reduce power?
Thanks, Bill "Paige Miller" <[EMAIL PROTECTED]> wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > [EMAIL PROTECTED] wrote: > > Should the cell sizes of the causal factor in an ANOVA be normally > > distributed? > > There is no requirement that the cell sizes be normally distributed. The > only requirement in the general linear model is that the errors are > normally distributed, and that is only necessary if you want to use > F-tests or t-tests. > > It is however true that ANOVA loses power when the samples sizes are > radically different, but even so, widely different sample sizes do not > violate any distributional requirement. > > -- > Paige Miller > [EMAIL PROTECTED] > http://www.kodak.com > > "It's nothing until I call it!" -- Bill Klem, NL Umpire > "When you get the choice to sit it out or dance, I hope you dance" -- > Lee Ann Womack > . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
