MCQ
Fill in the Blanks
Choose the correct option from the given alternative:
Find expected value of and variance of X for the following p.m.f.
| X | -2 | -1 | 0 | 1 | 2 |
| P(x) | 0.3 | 0.4 | 0.2 | 0.15 | 0.25 |
Options
0·85
– 0·35
0·15
– 0·15
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Solution
Find expected value of and variance of X for the following p.m.f.
| X | -2 | -1 | 0 | 1 | 2 |
| P(x) | 0.3 | 0.4 | 0.2 | 0.15 | 0.25 |
= – 0·35
Is there an error in this question or solution?
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