Double Sampling

Definition

A sampling approach in which an initial sample (usually small) is drawn and used to determine the necessary sample size for a subsequent sample within the same time period. This technique is often used in agricultural and ecological studies, including entomology, to optimize the precision of population estimates.

Etymology

Example

Double sampling is used when the population size is unknown and a preliminary survey is conducted to estimate the required sample size for a more detailed investigation in a study of insect populations.

Related Terms

• Initial Sample
• Sample Size Estimation