Changing the output of a function in R

Question

I have created a function to generate random poisson distributions but want the function to calculate the mean of lambda also.

xpoisson<-function(x,mu){rpois(x, lambda=mu)}

This is what I have written so far and Im not sure where/how to add the mean(mu) to the function. Any help apppreciated.

Answer 1

I believe what you want is not mean(mu) but mean(rpois(x,lamda=mu)) ? If so, just add the new line inside the function, assign the distribution and mean to variables and return both values by adding them to a list and returning said list.