You are enrolling swimmers in a study on lung capacity. You want 25% of your sample to be those who compete at 100m or less distances and 50% to be swimmers who compete at 100m-500m distances and 25% to be swimmers who compete at 500m distances. You begin enrolling for your study at 5am at the pool. By 9 AM you have all of your 100-500m swimmers enrolled, and all of your 500m swimmers enrolled. This is an example of what type of sampling method?
A) probability sampling
B) stratified sampling
C) cluster sampling
D) quota sampling

Question

You are enrolling swimmers in a study on lung capacity. You want 25% of your sample to be those who compete at 100m or less distances and 50% to be swimmers who compete at 100m-500m distances and 25% to be swimmers who compete at >500m distances. You begin enrolling for your study at 5am at the pool. By 9 AM you have all of your 100-500m swimmers enrolled, and all of your >500m swimmers enrolled. This is an example of what type of sampling method?
A) probability sampling
B) stratified sampling
C) cluster sampling
D) quota sampling

Quizplus · Accepted Answer

Quota sampling involves selecting a sample that reflects the characteristics of the whole population, but it is non-random. In this case, the researcher is filling quotas for each category of swimmer based on predetermined percentages.

You Are Enrolling Swimmers in a Study on Lung Capacity