Question: Compute the standard deviation for both sets of data presented in problem 3.13 and reproduced here. Compare the standard deviation computed for freshmen with the

Compute the standard deviation for both sets of data presented in problem 3.13 and reproduced here. Compare the standard deviation computed for freshmen with the standard deviation computed for seniors.

What happened? Why? Does this change relate to what happened to the mean over the four-year period?

How? What happened to the shapes of the underlying distributions?

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