Multiple comparisons

S

suobs

Guest
#1
Is there a rule of thumb to help deterimine when multiple comparisons are an issue within a single study/paper/report?

For example, if I use a 2-way ANOVA with two factors on a single variable I can get a number of relevant comparisons using post-hoc tests. However, if I have more than one variable, the ANOVA would be run more than once. Is that an issue?
 

bugman

Super Moderator
#2
If the y's are related it will be and you should be looking at a MANOVA model, if they are completely independent, it should be fine.