Question: In problem 12.7 on page 466, a statistics professor used tutorial class size to predict average class marks. Using the results of that problem: a.

In problem 12.7 on page 466, a statistics professor used tutorial class size to predict average class marks. Using the results of that problem:

a. Determine the coefficient of determination, r 2

, and interpret its meaning.

b. Find the standard error.

c. How useful do you think this regression model is for predicting the average class marks?

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