Modify the linregr function in Fig. 14.15 so that it (a) computes and returns the
Chapter 14, Problem 14.16(choose chapter or problem)
Modify the linregr function in Fig. 14.15 so that it (a) computes and returns the standard error of the estimate, and (b) uses the subplot function to also display a plot of the residuals (the predicted minus the measured y) versus x.
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