Calculate the monthly holding-period return for Stock A and the S&P 500 Index. What are the average monthly returns and standard deviation for each? Graph the Stock A returns against the S&P 500 Index returns? Use a spreadsheet to calculate the slope of the characteristic line and insert the line into the graph.

Stock A S&P 500 Index 2019 June July August September October November December 2020 January February March 32.27 32.75 30.87 29.49 31.83 31.33 35.63 1,320.64 1,293.22 1,218.11 1,155.33 1,253.30 1,525.96 1,257.50 31.60 35.74 1,312.45 1,365.68 1,408.55 1,366.99 1,312.33 1,366.69 36.90 41.02 39.19 42.05 April May June