Sampling Methods AQR

Interview every 10th student who enters the school in the morning.

• simple random

• cluster

• systematic

• convenience

Assign each car in a dealership a number and then use a random-number table to select the cars to be inspected.

• systematic

• simple random sample

• convenience

• stratified

An independent research company wants to go door to door to survey people in the city of Fontana. The company decides to number all blocks within the city limit, randomly choose 1 block and survey all households on that block.

This is an example of:

• Simple Random

• Stratified

• Cluster

• Systematic

A ___ is a large group that includes everything being studied.

• Sample
• Population

A ___ is a small portion of the population used to gather data from.

• Sample
• Population

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

• Stratified.

• Systematic

• Cluster

• Convenience

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.

She selects the five closest to her desk.

• Simple Random

• Cluster

• Convenience

• Systematic

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
• convenience

• systematic

Which sampling method is this?

To sample one case of individual cartons of goldfish crackers, 6 individual cartons are randomly chosen and all the crackers in those boxes are checked for smile or no smile.

• Convenience

• Systematic

• Stratified

• Cluster

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