Grade 9 Sampling Methods Worksheet

Sampling Methods in Statistics

Read each question carefully and answer to the best of your ability. Show all your work where applicable.

1. Which sampling method involves dividing the population into subgroups and then randomly selecting entire subgroups to be included in the sample?

2. A principal wants to survey students in a school. They decide to survey every 10th student that enters the school building on a particular morning. What type of sampling method is this?

3. In   sampling, every member of the population has an equal chance of being selected.

4. When a population is divided into homogeneous subgroups and then a simple random sample is drawn from each subgroup, this is known as   sampling.

5. A sample that is easily accessible and convenient to obtain is a   sample.

6. Convenience sampling is generally considered a representative sampling method.

7. Stratified sampling guarantees that all subgroups are represented in the sample.

8. Describe a scenario where systematic sampling would be an appropriate method to use.

9. Explain the main difference between stratified sampling and cluster sampling.

10. A researcher wants to study the average height of students in a large high school. The school has 1000 students, with an equal number of students in each of the four grades (9th, 10th, 11th, 12th). The researcher decides to randomly select 25 students from each grade. What sampling method is being used? Justify your answer.