9 63 Observations on both x and y are standardized, having estimated means of 0 and standard deviations of 1 (see Section 4 3) Show that the prediction equation has the form y rx, where r is the sample correlation between x and y That is, for the standardized variables, the y intercept equals 0 and the slope is the same as the correlation

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Question: 9.63.* Observations on both x and y are standardized, having estimated means of 0 and standard deviations of 1 (see Section 4.3). Show that the

9.63.* Observations on both x and y are standardized, having estimated means of 0 and standard deviations of 1 (see Section 4.3). Show that the prediction equation has the form ˆy = rx, where r is the sample correlation between x and y. That is, for the standardized variables, the y-intercept equals 0 and the slope is the same as the correlation.

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