Refer to the data in Exercise 11-5 on y steam usage and x
Chapter 11, Problem 11-55(choose chapter or problem)
Refer to the data in Exercise 11-5 on y steam usage and x average monthly temperature. (a) What proportion of total variability is accounted for by the simple linear regression model? (b) Prepare a normal probability plot of the residuals and interpret this graph. (c) Plot residuals versus and x. Do the regression assumptions appear to be satisfied?
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