Problem 5.3. The historical annual returns of a stock are: Year 2015: Return (-12%) Year 2016: Return (3%) Year 2017: Return (18%) Year 2018: Return (7%) Year 2019: Return (22%) Year 2020: Return (8%) Year 2021: Return (-4%) Year 2022: Return (14%) Calculate the average return and the standard deviation of return. Please show ALL workings..