A Random Sample of Steelhead Trout Was Selected; the Length

question 28

Essay

A random sample of steelhead trout was selected; the length of the trout in inches and the weight of the trout in pounds were measured. Fitting the simple linear regression model gave the estimated regression equation .
a) How would you interpret b = 0.976?
b) Substituting x = 30 gives = 9.98. Give two different interpretations of this number.
c) What happens if you predict the weight of an 18-inch trout? In a few sentences, explain why do you think this has occurred.
d) The value of r² is not presented here, but explain how you would interpret r² in the context of this problem.

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