Unit 3 Quiz

To do market research, a telemarketing firm randomly selected 1000 names from a store's database and contacted them. Classify the sampling method.

• simple random

• systematic

• voluntary response

• convenience

Asking every fifth student in the sixth grade his

or her opinion on something.

• simple sample

• systematic sample

• voluntary sample

• convenience sample

Interview every 5th person who enters Harvey's

• simple random

• voluntary response

• systematic

• convenience

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

• simple random

• voluntary response

• systematic

• convenience

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 Sample

• Stratified Random Sample

• Cluster Random Sample

• Systematic Random Sampling

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.

To get valid results, a sample must be...

• biased

• unbiased

Which would be a best example of an unbiased group?

• every third student entering the building

• every member of the varsity football team

• every member in Ms. Zimmer’s drama classes

• every student having a second-period French class

A school newspaper will survey students about the quality of the school’s lunch program. Which method will create the least biased results?

• Twenty-five vegetarians are randomly surveyed.

• Twenty-five students are randomly chosen from each grade level.

• Students who dislike the school’s lunch program are chosen to complete the survey

• A booth is set up in the cafeteria for the students to voluntarily complete the survey.

A survey is being conducted to determine if a cable company should add another sports channel to their schedule. Which random survey would be the least biased?

• surveying 30 men at a gym

• surveying 45 people at a mall

• surveying 50 fans at a football game

• surveying 20 members of a high school soccer team