Question: Does studying for an exam pay off? The number of hours studied, x, is compared with the exam grade received, y: x 2 5 1

Does studying for an exam pay off? The number of hours studied, x, is compared with the exam grade received, y:

x 2 5 1 4 2 y 80 80 70 90 60

a. Complete the preliminary calculations: extensions, five sums, SS(x), SS(y), and SS(xy).

b. Find r.

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