Consider the following returns for two investments A and B o
Consider the following returns for two investments, A and B, over the past four years:
| Consider the following returns for two investments, A and B, over the past four years: |
Solution
The table above gives the mean and std deviation.
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a) Mean of I 2.5
Mean of II 3.75
a.2 Higher return is Investment 2 as mean is more.
b)1 Less risk means less std deviation.
Hence investment I less risk.
c)
| Mean | std dev | |||||
| invt 1 | 1 | 10 | -7 | 6 | 2.5 | 7.325753659 |
| invt 2 | 5 | 10 | -13 | 13 | 3.75 | 11.64402565 |
