Let xyx y (b) Would you say the correlation is low, moderate, or strong?
Let xyx y (b) Would you say the correlation is low, moderate, or strong? positive or negative?low and negative
be the average number of employees in a group health insurance plan, and let be the average administrative cost as a percentage of claims.
3 7 15 40 74
40 35 30 25 20
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moderate and negative
strong and positive
low and positive
moderate and positive
strong and negative
(c) Use a calculator to verify that Σx = 139, Σx2 = 7359, Σy = 150, Σy2 = 4750, and Σxy = 3295. Compute r.
r =
