CAS MA 416 Study Guide - Quiz Guide: Analysis Of Variance, John Tukey, Family-Wise Error Rate

• School: Boston University
• Department: Mathematics & Statistics
• Course: CAS MA 416
• Professor: Joe Massaro

Document Summary

You may do these problems in sas when possible; however, some problems may not be able to be directly answered by sas. 45. 0 2 3 4 run: first we generate the required means: proc means data=progreq; run; class type years; var errors; Type years obs n mean std dev minimum maximum. Plotting this data as a treatment means plot, we have something like the following (there is more than one right answer here): Yes, it appears that a type and years effect are both present (difference between the two types, difference across the years). It appears also an interaction may be present since, for example, the difference between. Type small and type small and large is larger for 5 years of experience than for >10 years of experience. We will see if the sample size is large enough for the p-values: the anova table is obtained as follows: proc glm data=progreq; run;