Sampling Methods and Related Concepts

Front

Simple Random Sample (SRS)

Back

Every individual in the population has an equal chance of being selected.

Front

Stratified Random Sample

Back

The population is divided into strata, and a random sample is taken from each stratum.

Front

Cluster Sample

Back

The population is divided into clusters, some clusters are randomly selected, and all individuals in those clusters are surveyed.

Front

Convenience Sample

Back

A sample chosen based on ease of access or proximity to the researcher.

Front

Systematic Sample

Back

Every nth individual from a list or queue is selected, starting from a random point.

Front

Voluntary Response Sample

Back

A sample in which individuals choose to participate by responding to a general invitation.

Front

Representative Sample

Back

A sample that reflects the characteristics of the population from which it is drawn.

Front

Bias

Back

Systematic error introduced by the sampling method that skews results.

Front

Census

Back

A study that collects data from every individual in the entire population.