Grade 9 Sampling Methods Worksheet
This worksheet covers various sampling methods in statistics, including random, stratified, systematic, and convenience sampling, suitable for Grade 9 students.
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Sampling Methods in Statistics
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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?
Simple Random Sampling
Stratified Sampling
Cluster Sampling
Systematic Sampling
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?
Convenience Sampling
Systematic Sampling
Random Sampling
Stratified Sampling
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.
True
False
7. Stratified sampling guarantees that all subgroups are represented in the sample.
True
False
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.