Which of the following is an example of a random sampling method?

ASystematic sampling ✓ Correct

BConvenience sampling

CPurposive sampling

DQuota sampling

Correct answer: (A) Systematic sampling

Explanation

Among these choices systematic sampling is the probability method with a random start.

Convenience sampling takes easily available units and is non-probability.

Purposive sampling selects units by the researcher's judgment and is non-probability.

Quota sampling fills category quotas without randomization and is non-probability.

Systematic sampling picks every kth unit from a list after a random starting point.

Its interval must not coincide with a hidden periodicity in the list.

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