how i can use poison distribution i see no package for that anyone can guide?
Hi there! You can get access to it via the stats package. See an example below:
library(stats)
range <- 0:20
#create plot
plot(range, dpois(range, lambda=5), type='h')
Created on 2021-08-01 by the reprex package (v2.0.0)
Have a look at dpois for more details.