Author Question: The coefficient of correlation (Read 49 times)

jojoperlo_ · **on:** Mar 25, 2023

Question 1

Regression analysis was applied between sales (Y in $1,000) and advertising (X in $100), and the following estimated regression equation was obtained.

= 80 + 6.2 X

Based on the above estimated regression line, if advertising is $10,000, then the point estimate for sales (in dollars) is

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$62,080

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$142,000

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$700

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$700,000

Question 2

The coefficient of correlation

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is the square of the coefficient of determination

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is the square root of the coefficient of determination

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is the same as r-square

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can never be negative

mgranuc · **Reply #1 on:** Mar 25, 2023

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