Repeated Measures Univariate Analysis

Hicks Design of Experiment Example: Layout

Raw Data Pre: Check on Randomization

Raw Data Post: Check for Trt Effect

Refined Plots for Pre Scores

Can actually test Randomization with Pre scores

Refined Plots for Post Scores

Univariate Analysis Repeated Measures Have two error terms: S(G) and T Univariate Analysis Repeated Measures Have two error terms: S(G) and T*S(G)

Suppose Subject was deleted from the analysis

Model with Group and Test and Interaction

So what happened? When we drop terms from the model they go into… If we drop two terms from the model they go into… Since we now have only one error term, it is the combination of… So for some F-tests it is… For other F-tests it is… The means of those Main Effects and Interaction have not changed. but what did change was…

LS Means Plot Group

Interaction Plot

Tukey HSD on Interaction (be careful about the letters in JMP)

What if we only look at paired differences?

ANOVA on Paired Score Differences

Tukey HSD

Since a true Control Group exists, use Dunnett’s