An estimation regression is developed to test the linear relationship between the size of student population at a university and monthly sales of a nearby bookshop. The correlation coefficient is equal to 0.9

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An estimation regression is developed to test the linear relationship between the size of student population at a university and monthly sales of a nearby bookshop. The correlation coefficient is equal to 0.9.

Calculate the coefficient of determination to two decimal places:

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Answer: 0.31