Question

when conducting a population sampling study, which of the captured individuals should be counted?
both the tagged and total number of individuals
only the untagged individuals
only the total number of individuals
none of the tagged individuals

Explanation:

In population sampling (like mark - recapture method), both tagged (marked) and total (tagged + untagged in recapture) are counted. Tagged help estimate proportion, total in recapture is for calculation.

Answer:

A. both the tagged and total number of individuals