Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
A random sample is a subset of individuals chosen from a larger set (population) where each individual has an equal chance of being selected. This method ensures that the sample represents the population as closely as possible without bias.
Related terms
Population: The entire group of individuals or instances about whom the research is concerned.
Sampling Error: The difference between the characteristics of a sample and those of the population from which it was drawn.
Bias: A systematic error introduced into sampling or testing by selecting or encouraging one outcome or answer over others