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.