Redo the one-way ANOVAs requested in Computer Exercise 1 of the previous chapter, selecting both LSD and Tukey from the list of post hoc tests in each case. For postquiz anxiety, which pairs of quiz conditions (last question easy, moderate, difficult, or impossible) differ significantly from each other, according to each multiple comparison procedure (MCP)? Answer this question again for postquiz heart rate. Use Table G in your text, and your own calculations, to perform the Fisher-Hayter test for each dependent variable, and state the conclusions for this test. Compare the three MCPs with respect to power, using the results you found in this exercise to illustrate the differences.
Data from computer exercise 1
Perform one-way ANOVAs to test whether the different quiz conditions (last question is easy, moderate, difficult, or impossible) had a significant effect on postquiz anxiety and postquiz heart rate. Request descriptive statistics and draw a graph of the sample means, with the levels of the independent variable on the horizontal axis. Use the sample means to explain the results of your ANOVA.
Table G
