We can compute the coefficient of dispersion and test if it is significant. WE will discuss this in lecture as well. Another problem for the Poisson. Number of moss shoots per quadrat on china clay. I will discuss capture recapture a little.
Lets use fish as an example.
A lake has N fish, M are marked and then k are sampled later, and Y have marks. Here is a small program modified from the binomial program to compute hypergeometric probabilities. See how large M and N have to be for the binomial to give a reasonable approximation of sampling without replacement by sampling with replacement.