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Key Quiz 3.1
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1
A school wants to evaluate the quality of lunches served in its cafeteria, so all Grade 10’s are asked to complete a survey in their math class that Monday. Which of the following are the best descriptions of the population and sample in this case?
A)population: students
sample: Grade 10 students attending math class that Monday
B)population: students who eat in the cafeteria
sample: Grade 10’s attending math class that Monday
C)population: students who eat in the cafeteria
sample: all Grade 10 students
D)population: students at school that day
sample: students who eat in the cafeteria
2
Which of the following is the best example of cluster sampling?
A)The federal government contacts 1000 residents of each province at random to conduct a survey about foreign affairs.
B)The provincial government mails surveys to all households asking for their opinions on health care.
C)The municipal government requires all residents who come in to renew their parking permits to complete a survey on parking fees.
D)The provincial government randomly selects 5 ridings to survey their opinions on health care. Each household in the riding is canvassed by door-to-door interviewers.
3
A school wants to evaluate the quality of lunches served in its cafeteria, so all Grade 10’s are asked to complete a survey in their math class that Monday. What kind(s) of sampling technique is (are) being used in this case?
I. Simple Random Sampling
II. Cluster Sampling
III. Convenience Sampling
A)I only
B)II only
C)II and III
D)I, II, and III
4
A soda company wants to do market research on its new high-energy drink ZAP Cola. It sets up a booth at a busy food court in the downtown business district and invites people to do a taste test between ZAP and other “uncool” colas. Which of the following best explains why this might produce biased results?
A)ZAP is a misleading name for a high-energy drink, and people going to work won’t be very thirsty.
B)Taste-tests are not as accurate as long-term surveys.
C)The restaurants in the food court will resent the company for stealing customers away who will get drinks for free.
D)Downtown businessmen may not be representative customers, and the use of the word “uncool” might unconsciously bias test-takers.
5
A factory which produces a single type of MP3 player wishes to do a quality control study of its player. If its manufacturing process is standardized, which sampling technique would it be likely to use?
A)Systematic sampling.
B)Voluntary-response sampling.
C)Simple Random Sampling.
D)Systematic Random Sampling.





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