Statistics Sampling Methods

A teacher splits her classes up by period. She then randomly picks 3 students from each period to do a survey.

• Stratified.

• Systematic

• Cluster

• Biased.

Survey 10 students from every classroom in a building on campus.

• Convenience

• Systematic

• Stratified

• Simple Random

Which sampling method is this?

To sample Olathe South High School students, each classroom number was put into a hat and students drew three rooms and surveyed every student in those classes.

• Convenience

• Systematic

• Stratified

• Cluster

A principal orders t-shirts and wants to check some of them to make sure they were printed properly. She randomly selects 2 of the 10 boxes of shirts and checks every shirt in those 2 boxes. 

• Simple Random Sampling

• Stratified Random Sampling

• Cluster Random Sampling

• Systematic Random Sampling

A school chooses 3 randomly selected athletes from each of its sports teams to participate in a survey about athletics at the school.

• Simple Random Sampling

• Stratified Random Sampling

• Cluster Random Sampling

• Systematic Random Sampling

While students are lined up for school pictures, a teacher passes out a survey to every 10th student.

• Simple Random Sampling

• Stratified Random Sampling

• Cluster Random Sampling

• Systematic Random Sampling

A teacher wants to know how well her students are doing on a topic. She randomly picks one class to survey.

• Simple Random

• Cluster

• Stratified

• Systematic

You randomly select 5 math teachers, 5 English teachers and 5 kinesiology teachers to interview for the school newspaper.

• Convenience

• Systematic

• Stratified

• Simple Random

Identify the Sample:
A restaurant wants to know if their customers buy dessert when they eat out. As people leave the restaurant one evening, 20 people are surveyed at random. Eight people say they usually order dessert when they eat out. The restaurant concluded that most customers do not order dessert.

• 20 customers

• All customers

• 8 customers

• Dessert

This sample is selected by dividing the population into subgroups and then taking a fixed number of units from each group using the simple random sample.

• stratified

• cluster

• judgment

• experimental