In your position as research assistant to a portfolio manager, you need to analyze the profitability of the companies in the portfolio.

Using the data for Bed Bath & Beyond, Inc., below:

a. Calculate the net profit margin for each year.

b. Calculate the average annual growth rates for sales and net income using the GEOMEAN function. Is net income growing more slowly or faster than sales? Is this a positive for your investment in the company?

c. Calculate the average annual growth rate of sales using the AVERAGE function. Is this result more or less accurate than your result in the previous question? Why?

d. Create a column chart of sales and net income. Be sure to change the chart so that the x-axis labels contain the year numbers, and format the axis so that 2002 is on the far right side of the axis.