Die#2、#1 | 1 | 2 | 3 | 4 | 5 | 6 |
1 | 2 | 3 | 4 | 5 | 6 | 7 |
2 | 3 | 4 | 5 | 6 | 7 | 8 |
3 | 4 | 5 | 6 | 7 | 8 | 9 |
4 | 5 | 6 | 7 | 8 | 9 | 10 |
5 | 6 | 7 | 8 | 9 | 10 | 11 |
6 | 7 | 8 | 9 | 10 | 11 | 12 |
Categories | Discrete | Continuous |
Probability density function (pdf) | P(x)=P(X=x) | F(x) *the f(x)does not exist on any fixed point |
Cumulative distribution function (cdf) | F(x)=P(X≤x) | F(x)=P(X≤x) P(x1≤X<x2=F(x2)-F(x1) |
Mean | variance | |
Bernoulli,B(1,P) | P | Binomial,B(N,P) |
Binomial,B(N,P) | NP | NP(1-P) |
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