Sample (statistics)

Written By: Ehsan Jahandarpour

In statistics and quantitative research methodology, a sample is a set of individuals or objects collected or selected from a statistical population by a defined procedure. The elements of a sample are known as sample points, sampling units or observations. When conceived as a data set, a sample is often denoted by capital roman letters such and , with its elements expressed in lower-case (e.g., ) and the sample size denoted by the letter .