3. Now calculate the coefficients of variation (CV) Apex Footwear, Brac Bank, and the Market Index. Hint: CV = S x 4. Construct a scatter diagram graph that shows Apex Footwears and BRAC Banks returns on the vertical axis (that is, Y axis) and the market indexs returns on the horizontal axis (that is X axis). Because, individual companys return depend on the market index return.