The following image is the question, I would greatly apprictiate some help. Thanks

You are given the following price and dividend data for three different securities over seven months Compute the rate of return for each company for each month Compute the average rate of return for each company Compute the standard deviation of the rate of return for each company Compute the correlation coefficient between all possible pairs of securities Compute the average return and standard deviation for the following portfolios: 1/2A + 1/2B 1/2A + 1/2C 1/2B + 1/2C You are given the following price and dividend data for three different securities over seven months Compute the rate of return for each company for each month Compute the average rate of return for each company Compute the standard deviation of the rate of return for each company Compute the correlation coefficient between all possible pairs of securities Compute the average return and standard deviation for the following portfolios: 1/2A + 1/2B 1/2A + 1/2C 1/2B + 1/2C