8.1 Calculate the mean of the return on equity and the mean of share price; 3.2 Calculate the variance of the return on equity and the variance of share price; 8.8 Calculate the standard deviation of the return on equity and the standard deviation of share price; 3.4 Calculate the covariance between the return on equity and share price. Is the relationship between the return on equity and share price negative? Why or why not? 8.5 Calculate the coefficient of correlation between the return on equity and share price. Is the relationship between return on equity and share price weak? Why or why not? 8.6 In order to boost share price, would you recommend a strategy that aims at improving return on equity? Why or why not