F-test bias for experimental designs of the Latin square type

In an earlier paper, a method of analysis, due to Neyman and now known generally as variance component analysis, was used to examineF-test bias for experimental designs in education of the randomized block type. The same method is now applied to studyF-test bias for designs of the Latin square type. The results, in general, disprove the view that, for a valid application of Latin square techniques, it is necessary that all interactions are zero.