6. Worldwide Widget Manufacturing, Inc., has decided to invest in some stock. As CFO, you've been asked to review the portfolio. First, you'll need to measure the past performance of the investments. Then, measure the past return's risk of the investment. Lastly, calculate the average return and risk of the portfolio. The following table shows the annual returns for Company A and Company B, which are part of the investment portfolio you're interested in. Company A Company B Year 1 5.23% 13.51% Year 2 8.91 -9.35 Year 3 7.32 2.44 Year 4 - 15.81 3.12 Year 5 -8.32 14.81 Year 6 25.98 1 18.36