Using the probability distribution below to calculate the expected value.
|
X |
P(X=x) |
|
1 |
0.21 |
|
2 |
0.13 |
|
3 |
0.37 |
|
4 |
0.29 |
Solution:
We have to find expected value for given probability distribution.

| X | P(X=x) | X*P(X=x) |
| 1 | 0.21 | 0.21 |
| 2 | 0.13 | 0.26 |
| 3 | 0.37 | 1.11 |
| 4 | 0.29 | 1.16 |
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Thus


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