Please answer 5D thank you

A B C Time Price Dividend Price Dividend Dividend 1 333 Price 106 3/4 108 1/4 124 2. 3 0.725 1.35 0.4 4 57 3/4 59 7/8 59 3/8 55 1/2 56 1/4 59 60 1/4 368 368 1/2 382 1/4 386 397 3/4 392 5 122 1/4 135 1/2 141 3/4 165 3/4 6 0.725 1.35 0.42 7 5. Below is actual price and dividend data for three companies for each of seven months. B C A Dividend Dividend Dividend Time 1 Price 333 368 Price 106 3/4 108 1/4 2 Price 57 3/4 59 7/8 59 3/8 55 1/2 56 1/4 3 0.725 368 1/2 1.35 124 0.40 4 382 1/4 5 386 122 1/4 135 1/2 141 3/4 165 3/4 6 59 0.725 1.35 0.42 397 3/4 392 7 60 1/4 a. Compute the rate of return for each company for each month b. Compute the average rate of return for each company c. Compute the standard deviation of the rate of return for each company d. Compute the correlation coefficient between all possible pairs of securities