Question: 19. (a) In question 18 what advanced statistical procedures can Poindexter employ to improve his predictions about test errors even more? (b) Say that the

19.

(a) In question 18 what advanced statistical procedures can Poindexter employ to improve his predictions about test errors even more?

(b) Say that the resulting correlation coefficient is .67. Using the proportion of variance accounted for, explain what this means.

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