poisson_distribution
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Poisson distribution
\begin{eqnarray*} P(X=x) & = & \frac {\lambda^{x} e^{-\lambda}}{x!}, \;\; \text{for } x = 0, 1, 2, 3, . . . \\ E(X) & = & \lambda \\ Var(X) & = & \lambda \end{eqnarray*}
e <- exp(1) e
> e <- exp(1) > e [1] 2.718282
poisson_distribution.1572847236.txt.gz · Last modified: 2019/11/04 15:00 by hkimscil