Sampling

It is not always possible to count every individual in a population because the large number of organisms would make it time-consuming.Sampling can be used to estimate the number of organisms without having to count them all.The number of individuals in a species present in an area is known as the species abundance.Samples can be random or non-random.Statistical sampling is the selection of a representative subset or a statistical sample of individuals from within a statistical population to estimate characteristics of the whole population.The subset is meant to reflect the whole population, so an attempt is made to attempt to collect samples that are representative of the population.Sampling has lower costs and faster data collection compared to recording data from the entire population.In many cases, it is infeasible to measure the entire population.