For the data in Exercise 20.5 we could say that three out of 10 residents used fewer
Question:
For the data in Exercise 20.5 we could say that three out of 10 residents used fewer hypotheses the second time and seven used more. We could test this with x2. How would this differ from either Friedman’s test or an appropriate randomization test applied to those data?
I frequently ask you to use SPSS or R to solve a problem. You should have no problem with SPSS if you stick with the “Legacy” analyses. You should be able to use R by modifying the code that I give on the Web page for this chapter: http://www.uvm .edu/~dhowell/fundamentals9/Supplements/Chapter20R.html
Exercise 20.5
It has been argued that first-born children tend to be more independent than later-born children. Suppose we develop a 25-point scale of independence and rate each of 20 first-born children and their second-born siblings using our scale. We do this when both siblings are adults, thus eliminating obvious age effects. The data on independence are as follows (a higher score means that the person is more independent):
a) Analyze the data in SPSS or R using Wilcoxon’s matched-pairs signed-ranks test. b) What would you conclude?
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