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The table below shows the annual return of an investor over a 5 year period. Year 2017 2018 2019 2020 2021 Return 15% 18% 20%
The table below shows the annual return of an investor over a 5 year period.
Year | 2017 | 2018 | 2019 | 2020 | 2021 |
Return | 15% | 18% | 20% | -2% | 3% |
Calculate the mean and standard deviation of return. (4 marks)
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