x | P(x) | x* P(x) | x square | x 2* P(x) |
2 | 0.2000 | 0.40 | 4.00 | 0.80 |
3 | 0.1000 | 0.30 | 9.00 | 0.90 |
4 | 0.3000 | 1.20 | 16.00 | 4.80 |
5 | 0.2000 | 1.00 | 25.00 | 5.00 |
6 | 0.2000 | 1.20 | 36.00 | 7.20 |
Total | 1.000 | 4.100 | 90.00 | 18.70 |
= 4.10
= 1.37
one question Let X be a (discrete) random variable with probability function (pdf) given by the...
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