Question: Using the following random data demonstrate what happens to the
Using the following (random) data, demonstrate what happens to the multiple correlation when you drop out cases from the data set (e.g., use 15 cases, then 10, 6, 5, 4).
Answer to relevant QuestionsCalculate the adjusted R2 for the 15 cases in Exercise 11.6. Twice in this chapter I said that we were going to ignore the adjusted R2, even though it is a perfectly legitimate statistic. Can you tell what it is ...The data referred to in Exercise 12.10 (in pounds gained) follow. Run the appropriate t test and draw the appropriate conclusions. Compute the 95% confidence limits on mean anxiety for the data in Exercise 12.17. In Table 11.1 in Chapter 11 we saw data on the state means of students who took the SAT exam. The mean Verbal SAT for North Dakota was 515. The standard deviation was not reported. Assume that 238 students took that ...Modify the data in Exercise 13.6 by shifting the entries in the “12 hour” column so as to increase the relationship between the two variables. Run a t test on the modified data and notice the effect on t. (You could ...
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