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Key Concepts Quiz 4.2
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1

Which of these is true?
A)A sample is the entire population being studied.
B)A population is part of the group being studied.
C)A population is the entire group being studied.
D)A sample and a population mean the same thing.
2

Which of the following is a random sample?
Random Sampling Worked Example (10.0K)

A)Bill shuffled a deck of cards, and then dealt five.
B)Judy needed a sample of teenagers for a survey, so she asked all the members of her dance class.
C)Ricardo needed a sample of shoppers for a survey, so he set up a table with a sign at the local mall and waited for people to stop by.
D)Natasha needed a sample of town citizens. She interviewed all the people living on her street.

Use the document below to help answer questions 3 to 6:




3

Marcel carried out a survey to determine whether people living in a town had tried a new soft drink. He went to the local mall, interviewed the first customer entering the mall, and every tenth customer after that. What kind of sampling technique was Marcel using?
A)Simple random.
B)Systematic random.
C)Stratified random.
D)Non-random.
4

Maria was commissioned to do a market survey to determine the market share of various toothpastes. She set up a table outside a grocery store, and offered a free cinnamon donut to anyone who would consent to be surveyed. What kind of sampling technique was Maria using?
A)Simple random.
B)Systematic random.
C)Stratified random.
D)Non-random.
5

Suleiman needed advice on planning an athletic banquet for his school. He interviewed members of various sports teams in proportion to the size of the team. What kind of sampling technique was he using?
A)Simple random.
B)Systematic random.
C)Stratified random.
D)Non-random.
6

Diana was in charge of giving away door prizes at a dance. She gave each person a numbered ticket when they entered the dance hall. She then gave away the ten door prizes by selecting numbers from a hat. What kind of sampling technique was she using?
A)Simple random.
B)Systematic random.
C)Stratified random.
D)Non-random.





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