Homework Answers
| y | ||||||
| x | 0 | 1 | 2 | 3 | 4 | Total |
| 0 | 0.03 | 0.01 | 0.02 | 0.01 | 0.01 | 0.08 |
| 1 | 0.09 | 0.05 | 0.08 | 0.03 | 0.01 | 0.26 |
| 2 | 0.07 | 0.05 | 0.07 | 0.04 | 0.02 | 0.25 |
| 3 | 0.06 | 0.04 | 0.09 | 0.04 | 0.02 | 0.25 |
| 4 | 0.04 | 0.03 | 0.04 | 0.03 | 0.02 | 0.16 |
| Total | 0.29 | 0.18 | 0.30 | 0.15 | 0.08 | 1.00 |
from above Cov(X,Y )=E(XY)-E(X)*E(Y) = 0.1675
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