Question

lesson 22 checkpoint
jeannie would like to survey 30 juniors about the quality of the cafeteria food. she randomly chooses three classrooms where juniors are in english lessons and randomly selects 10 students to conduct her survey.
what type of sampling strategy is she using?
convenience
simple random
quota
cluster

Explanation:

• Convenience sampling: Selects easily accessible individuals. Here, Jeannie is not just picking the most convenient students but using a more structured approach.
• Simple random sampling: Each individual has an equal chance of being selected from the entire population. Jeannie is not sampling from the entire junior population directly but in groups (classrooms).
• Quota sampling: Involves setting quotas for certain characteristics. There is no mention of quotas based on specific traits in this scenario.
• Cluster sampling: Divides the population into clusters (here, classrooms), randomly selects some clusters (three classrooms), and then samples from within those clusters (10 students per classroom). This matches Jeannie's method.

Answer:

cluster