| Library: | distribs |
| See also: | cdfpois |
| Quantlet: | pdfpois | |
| Description: | computes the probability density function of a Poisson distribution Po(lambda) at a grid x |
| Usage: | ret = pdfpois (x, lambda) | |
| Input: | ||
| x | array of integer numbers (0<=x), input values | |
| lambda | positive scalar or array of the same dimension as x, parameter of Poisson distribution (0<lambda) | |
| Output: | ||
| ret | array, computed probabilities | |
library("distribs")
pdfpois(#(0,3,5,Inf), 3)
Contents of ret [1,] 0.049787 [2,] 0.22404 [3,] 0.10082 [4,] 0
library("distribs")
(0:4)~pdfpois(0:4, 4)
Contents of _tmp [1,] 0 0.018316 [2,] 1 0.073263 [3,] 2 0.14653 [4,] 3 0.19537 [5,] 4 0.19537