Consider the data from the repeated measures design shown in Table 9.10. (a) Fit a multivariate model
Question:
Consider the data from the repeated measures design shown in Table 9.10.
(a) Fit a multivariate model using the lm function and then use the Anova function in the car package to compute the sphericity test (as shown in Section 9.6.1) and determine if the Huynh-Feldt condition holds.
(b) From the output of the Anova function used in
(a) examine the Greenhouse-Geisser and Huynh-Feldt adjusted F-tests of the sub-plot eects (are they signicant?).
(c) Do you nd more terms signicant using the adjusted F-tests than were found using the growth curve analysis shown in the text? If so, explain why.
Step by Step Answer:
Related Book For
Design And Analysis Of Experiments
ISBN: 9780471661597
6th International Edition
Authors: Douglas C. Montgomery
Question Posted: