Question

practice midterm exam
score: 2/17 answered: 2/17
question 3
in a study, the sample is chosen by separating all cars by size, and selecting 10 of each size grouping
what is the sampling method?
simple random
systematic
stratified
cluster
convenience
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Explanation:

Stratified sampling divides the population into subgroups (here, car size groupings) and then samples from each subgroup. In this case, cars are separated by size (forming strata) and 10 are selected from each size grouping, which matches the stratified sampling method. Simple random sampling would select cars without dividing into groups. Systematic sampling uses a fixed - interval selection. Cluster sampling would group cars into clusters and select whole clusters. Convenience sampling would select cars based on ease of access.

Answer:

Stratified