Question

question 1/1
which sampling method selects items at regular als from a production p
a. a. random sampling
b. b. cluster sampling
c. c. systematic sampling
d. d. stratified sampling

Explanation:

To determine the correct sampling method, we analyze each option:

• Option A (Random sampling): Involves selecting items randomly without a fixed interval. So, it does not select items at regular intervals. Eliminate A.
• Option B (Cluster sampling): Divides the population into clusters and then samples entire clusters. There's no regular interval for item selection. Eliminate B.
• Option C (Systematic sampling): Selects items from a population at regular intervals (e.g., every \( k \)-th item after a random start). This matches the description of selecting items at regular intervals.
• Option D (Stratified sampling): Divides the population into strata (subgroups) and samples from each stratum. It does not involve regular interval selection. Eliminate D.

Answer:

C. Systematic sampling