stock is CVX

d) What is the standard deviation of your stock's quarterly returns over the -quarter period? (You can easily compute the standard deviation of your column of stock return data by using a "compute" statement.) What is the standard deviation of the quarterly stock market returns (as measured by quarterly returns on the S&P index) over the -quarter period? Is your stock more volatile than the stock market in general? If so, why do you think it is more volatile than the market