Redo the one-way ANOVAs requested in Computer Exercise 3 of the previous chapter, selecting LSD as your MCP. Also, use your statistical software to perform ordinary t tests for each pair of math groups for each dependent variable. Explain the differences between the LSD test and ordinary t tests as applied to the data in this exercise.

Data from computer exercise 3

Create a grouping variable from the number of math courses taken (Group 1 = none; Group 2 = one or two; Group 3 = three or more), and perform one-way ANOVAs on both the math background quiz and the statistics quiz. In each case, explain your results in terms of the means of the three groups.