Sampling Methods
Math ⇒ Statistics and Probability
Sampling Methods starts at 9 and continues till grade 12.
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See sample questions for grade 11
A population consists of 1000 students. If you select every 10th student from a list, what sampling method are you using?
A population has 5000 people. You want a sample of 100. What is the sampling interval if you use systematic sampling?
A researcher uses a phone directory to select every 50th name for a survey. Is this an example of probability or non-probability sampling?
A researcher wants to estimate the average height of students in a university. She randomly selects 10 students from each department. What sampling method is this?
A researcher wants to study the eating habits of students in a school. She divides the students into grades and randomly selects students from each grade. What sampling method is she using?
A researcher wants to study the opinions of teachers in a city. She divides the city into districts and randomly selects some districts, then surveys all teachers in those districts. What sampling method is this?
A school has 5 classes. The principal randomly selects 2 classes and surveys all students in those classes. What sampling method is this?
Describe one advantage and one disadvantage of systematic sampling.
Describe the main purpose of using sampling methods in statistics.
Explain the main difference between cluster sampling and stratified sampling.
Explain why non-probability sampling methods may lead to biased results.
Explain why stratified sampling can lead to more precise estimates than simple random sampling.
