which design of data is best for planned contrasts? why would you use plan contrast as an a priori comparison what is a priori contrast in statistics if the data violates the assumptions of the rm analysis, how does this affect the accuracy of the planned contrasts? what is the purpose of planned contrast when to use planned contrasts in analytic designs when is a planned comparison performed what is the purpose of planned comparison in repeatable measures what are planned contrasts when does an a priori comparison take place can you use planned contrasts in an rm study? when to use planned contrasts in a rm anova why is an a priori planned contrast necessary in repeated measures analysis what are planned contrasts can randomised comparisons be performed with planned contrasts if planned contrasts are not successful what is the role of the planned contrasts what type of data can be used to perform a priori planned contrasts when do you use planned contrasts why use planned contrasts in repeated measures