You are concerned about how much price affects sales.

• A. Correlation
• B. R-squared
• C. Adjusted R-squared.

You are using Advertisement and Price Coefficients and you want a quick measure of the effect on Sales.

• A. Correlation
• B. Adjusted R-squared
• C. R-squared

You want to find out with 95% confidence for the Advertisement effect.

• A. Test for a population mean.
• B. Confidence interval for a slope.
• C. Test for a population proportion.