Question: Probability Expected Return 0.3 -10% 0.4 5% 0.3 15% Assume that the above table represents IBMs probability distribution of returns, based on 100 years of
| Probability | Expected Return |
| 0.3 | -10% |
| 0.4 | 5% |
| 0.3 | 15% |
Assume that the above table represents IBMs probability distribution of returns, based on 100 years of data (30 years with -10%, 40 years with 5%, and 30 years with 15%). What is the sample standard deviation of IBM?
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