In: Finance
RTF stock is expected to return 11 percent in a normal economy and lose 15 percent in recession. The probability of a recession is 33 percent while the probability of a booming economy is zero percent. What is the variance of the returns on RTF stock?
| Step-1:Calculation of expected return of RTF stock | ||||
| State of economy | Probability | Return with probability | Expected return with probability | |
| a | b | c=a*b | ||
| Normal | 0.6700 | 0.1100 | 0.0737 | |
| Recession | 0.3300 | -0.1500 | -0.0495 | |
| Total | 1.0000 | 0.0242 | ||
| So, expected return is | 0.0242 | |||
| Step-2:Calculation of variance of return | ||||
| State of economy | Probability | Return with probability | Expected return | |
| a | b | c | d=((b-c)^2)*a | |
| Normal | 0.6700 | 0.1100 | 0.0242 | 0.004932 | 
| Recession | 0.3300 | -0.1500 | 0.0242 | 0.010014 | 
| Total | 1.0000 | 0.0484 | 0.002343 | |
| Thus, | ||||
| Variance of return is | 0.002343 | |||