Sampling Techniques - GCSE Biology Definition

Sampling techniques are methods used in biology to study a small part of a larger population or area to make conclusions about the whole. These techniques help scientists collect useful data without having to measure every single organism or feature, which would be difficult and time-consuming. Common sampling techniques include random sampling, where locations are chosen by chance, and systematic sampling, where samples are taken at regular intervals. These methods are often used to estimate things like the population size of a species or the distribution of plants in a habitat. Sampling allows scientists to study ecosystems in a practical and reliable way.