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

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

Syntax: rpois(N, lambda)

Parameters:
N: Sample Size
lambda: Average number of events per interval

Example 1:

# 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:

# 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: