In: Statistics and Probability
You are considering building up an investment portfolio of stocks (S) and/or short term Treasury bills (T). The returns from both sources are judged uncertain, of course, as the following probability table indicates:
T |
S |
||||
-10% |
0% |
10% |
20% |
||
6% |
0 |
0 |
0.10 |
0.10 |
|
8% |
0 |
0.10 |
0.30 |
0.20 |
|
10% |
0.10 |
0.10 |
0 |
0 |
(1) If you split your investment 70% in stock and 30% in Treasury bills, what are the expected rate of return and standard deviation of the portfolio?
(2) Are the returns of stock and bond independent?