binomial sampling or presence/absence sampling

Binomial sampling or presence/absence sampling:Binomial sampling is a method of sampling that is used to estimate the proportion of a population that consists of individuals with a certain characteristic. The characteristic can be anything that can be observed and counted, such as the presence or absence of a particular species of plant or animal. Presence/absence sampling is a type of binomial sampling in which the characteristic being sampled for is the presence or absence of a particular species.