Compute Randomly Drawn Poisson Density in R Programming rpois() Function (original) (raw)

Last Updated : 15 Jul, 2025

**rpois()** function in R Language is used to compute random density for poisson distribution.

Syntax: rpois(N, lambda)Parameters: N: Sample Sizelambda: Average number of events per interval

Example 1:

Python3 `

R program to compute random

Poisson Density

Setting seed for

random number generation

set.seed(1000)

Set sample size

N <- 20

Calling rpois() Function

y <- rpois(N, lambda = 5) y

`

Output:

[1] 4 6 2 6 5 2 6 5 3 3 4 6 4 7 7 2 5 6 2 5

Example 2:

Python3 `

R program to compute random

Poisson Density

Setting seed for

random number generation

set.seed(1000)

Set sample size

N <- 100

Calling rpois() Function

y <- rpois(N, lambda = 15)

Plot a graph

plot(y)

`

Output: