Question

identify the type of sampling used (random, systematic, convenience, stratified, or cluster sampling) in the situation described below. a researcher selects every 551th social security number and surveys the corresponding person. which type of sampling did the researcher use?
options:

• cluster sampling
• systematic sampling
• stratified sampling
• convenience sampling
• random sampling

Explanation:

Systematic sampling involves selecting every k-th element from a population. Here, the researcher selects every 551st social security number, which fits the definition of systematic sampling (k = 551). Cluster sampling groups the population and samples clusters, stratified divides into strata and samples from each, convenience uses easy-to-reach samples, and random selects randomly. Since the selection is every 551st, it's systematic.

Answer:

Systematic sampling (the option: Systematic sampling)