For Walmart

Calculate the company's stock average return, standard deviation, and coefficient of variation for the period 2006-2016. Use the closing price for the last day of trading for each year (December 31st) and annualized dividend. You may use finance.yahoo.com or marketwatch.com. Walmart stock has split 9 times If your stock has split, use the adjusted price. To obtain the annual divided, just simply add the quarterly dividends. https://finance.yahoo.com/quote/wmt/history/