Probability sampling

Definition

Probability sampling is a method used in research to select a sample from a larger population using random selection processes where each member has a known, non-zero chance of being selected. This approach ensures that the sample can accurately represent the larger population, allowing for generalizations about public opinion in political science contexts.

Related terms

Random Sampling:

A technique where each member of a population has an equal chance of being selected to be part of the sample.

Stratified Sampling: A method that divides the population into smaller groups (strata) based on shared characteristics before randomly selecting participants from each group to ensure representation across key demographics.

Margin of Error:

A statistic that expresses the amount of random sampling error in a survey's results, indicating how closely the sample estimates reflect the true opinions or behaviors of the total population