Using the 2014 financial statements from your stocks above and the equations from your textbook, prepare the Historical Average and Standard...

Using the 2014 financial statements from your stocks above and the equations from your textbook, prepare the Historical Average and Standard Deviation for each stock.

Note: My chosen stocks are Delta Airlines and American Airlines. 

http://www.nasdaq.com/symbol/aal/financials?query=balance-sheet

http://www.marketwatch.com/investing/stock/DAL/financials/balance-sheet