### Definition

A **probability sample** is a sample in which each population element has a known, nonzero chance of being included (compared to non-probability sample).[1]

### References

- ^ American Marketing Association,
*AMA Dictionary.*

A **probability sample** is a sample in which each population element has a known, nonzero chance of being included (compared to non-probability sample).[1]

- ^ American Marketing Association,
*AMA Dictionary.*