Which statement correctly distinguishes a sampling frame from a census?

Which statement correctly distinguishes a sampling frame from a census?

• A. A sampling frame is a list of all subjects in the selected population, whereas a census is a complete count of all relevant members.
• B. A sampling frame is a complete count of all relevant members.
• C. A census is a list of all subjects in the population.
• D. A sampling frame and census refer to the same concept.

Answer: (A)

The main idea here is how a sampling frame differs from a census. A sampling frame is the list or operational set from which you actually draw your sample; it’s a practical tool that may not perfectly match the entire population, so some members can be missing or outdated. A census, on the other hand, aims to count or measure every member of the population—every relevant unit—so it’s a complete enumeration rather than a sample drawn from a frame. Saying the frame is a list of all subjects and the census is a complete count captures this distinction. The other descriptions mix up these roles: a frame is not a complete count, a census isn’t just a list of subjects, and the two terms are not interchangeable.

The main idea here is how a sampling frame differs from a census. A sampling frame is the list or operational set from which you actually draw your sample; it’s a practical tool that may not perfectly match the entire population, so some members can be missing or outdated. A census, on the other hand, aims to count or measure every member of the population—every relevant unit—so it’s a complete enumeration rather than a sample drawn from a frame. Saying the frame is a list of all subjects and the census is a complete count captures this distinction. The other descriptions mix up these roles: a frame is not a complete count, a census isn’t just a list of subjects, and the two terms are not interchangeable.