Data Sampling

The author of the statistical study was an observer at a police sobriety checkpoint at which every 5th driver was stopped and interviewed. Which sampling type is this?

• random

• systematic

• convenience

• stratified

• cluster

Fund-raisers for the local college test a new telemarketing campaign by obtaining a list of all alumni and selecting every 100th name on that list. Which sampling type is this?

• random

• systematic

• convenience

• stratified

• cluster

The author of a study surveyed all of his students to obtain sample data consisting of the number of credit cards students possess. Which sampling type is this?

• random

• systematic

• convenience

• stratified

• cluster

Interview every 10th student who enters the school in the morning. Determine the sampling method used.

• simple random sampling

• cluster sampling

• systematic sampling

• convenience sampling

Answer the question pictured.

• 4 students in the hallway

• All students in the marching band

• 50 12th graders at random

• 100 students at random during lunch

Ana wants to know the average student’s opinion of the tardy policy at her school. Which group of students should she survey in order to achieve the most accurate results?

• Thirty randomly selected students from her school

• Thirty students who are rarely tardy

• thirty of her friends

A musician wanted to see what people who bought his last album thought about the songs. Which choice best represents a sample? .

• Every person who bought the album.

• A selection of people who didn't want to buy the album.

• 250 girls who bought the album

• A selection of 3,294 people who bought the album.

Disneyland often surveys its guests as they exit a restaurant during their visit. The surveyor stands at the restaurant exit, counts the number of people leaving, and surveys every 25th guest.
This is a form of:

• Simple Random Sample

• Stratified Random Sample

• Voluntary Response

• Systematic Random Sampling

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 Sampling

• Stratified Sampling

• Convenience Sampling

• Systematic Sampling

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

She picks the student in every 5th seat.

• Simple Random

• Systematic

• voluntary response

• convenience