A common saying in golf is “You drive for show, but you putt for dough.” To see if there is any truth in this assertion, data for ninety-six top money-winning golfers were examined. For each, their money earnings in 2014 (y, in $ millions), their average yards per drive (v), and their average number of putts (x) were tallied.

(a) Show that the correlation coefficient between the putting average and earnings reveal a slightly stronger relationship than that for driving and earnings. Use the following sums:

and also

(b) For each correlation r, compute r² to show that neither the v nor the x variable alone is a good predictor of earnings.

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96 Σ υ = 27,989, i=1 96 Σ y = 230.87, i=l 96 Συν; = 67658.00, 96 Σv = 8,167,723, il 96 Ey? =734.32, i1