For the data in Appendix D, form three groups. (These data are available at www.uvm .edu/~dhowell/fundamentals8/DataFiles/Add.dat.) Group 1 has ADDSC scores of 40 or below, Group 2 has ADDSC scores between 41 and 59, and Group 3 has ADDSC scores of 60 or above. Run an analysis of variance on the GPA scores for these three groups.
Answer to relevant QuestionsFor the data in Appendix D, form three groups. In Exercise 16.13. (These data are available at www.uvm.edu/~dhowell/fundamentals8/DataFiles/Add.dat.) Group 1 has ADDSC scores of 40 or below, Group 2 has ADDSC scores between ...Calculate d^ for the comparison of WL with SIT in Exercise 16.18 using the standard deviation of the Control group to standardize the difference. Using the data from Exercise 16.25, (a) Calculate h2 and v2. (b) Why do the two estimates of the magnitude of effect in part (a) differ? (c) Calculate a measure of d^, using the most appropriate groups. What would happen if the sample sizes in Exercise 16.7 were twice as large as they were? In Exercise 16.3 you ran a test between Groups 1 and 3 combined versus Groups 2 and 4 combined. How does that test compare to testing the main effect of Location in Exercise 17.16? Is there any difference?
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