Please help me with this also.

This table contains the annual returns for the stocks of M and N. Use Excel to create a spreadsheet that calculates the average, standard deviation, and correlation coefficient for the two annual return series. Next, use the averages, standard deviations, and correlation coefficients along with the portfolios shown here to calculate a range of portfolio return and risk combinations. Finally, graph the range of return and risk combinations. The average annual return for Stock M over the 10-year period is %. (Enter as a percentage and round to two decimal places.)