How do we use a least squares regression line? what is the, Ask an Expert

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Regression analysis was applied between sales in ($1000) and advertising(in $100), and the following regression function was obtained: Y = 61 +4.1X Based on this regression line, if advertising is $10,000, the point estimate for sales (in dollars) is what?

2. How do we use a least squares regression line?

3. What is the range for the coefficient of determination?

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