Below is nine months return data for Walgreens and the S&P 500. a. Estimate the intercept (alpha)

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Below is nine months’ return data for Walgreens and the S&P 500.

a. Estimate the intercept (alpha) and beta for Walgreens stock using spreadsheet functions.

b. Interpret what the slope estimate means to a stock analyst.

c. Compute the R-squared of the regression using Excel’s RSQ function. What does the R-squared tell us about the relationship between Walgreens’ returns and those of the market?

Month Walgreens Return S&P500 Return 1 2.0% 7.5% -5.9% 1.8% 2 0.2% -8.2% 4 2.0% -6.4% -1.1% -2.2% -2.5% 6. -14.3% -6.0%

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