Pretest

Question 1

The population of a town is divided into three age categories. A random sample of each category is surveyed about voting choices. This type of sampling is called

Revolt · Accepted Answer

A: stratified sampling.

Question 2

At the beginning of a call to the cable company, a message tells customers, “After you finish talking to our customer service representative, you will be asked to take a five-question survey about the level of service you received. It would be appreciated if you could please stay on the line to answer the survey questions.” What type of sampling is the cable company using?

Revolt · Accepted Answer

D: voluntary sampling

Question 3

Brand cap y Cola sponsors a survey of 15 comma 559 residents of Texas to determine which brand of cola they prefer. 40 percent say they prefer Brand cap x , and 60 percent say they prefer Brand cap y Which of the following is the sample used for the survey?

Revolt · Accepted Answer

A: the  15 comma 559  residents

Question 4

Which of the following could be classified as a census?

Revolt · Accepted Answer

A: a survey of each student in a school about school lunch options

Question 5

Researchers periodically survey a few thousand of the patients taking a certain medication in order to make connections between that medication and the subjects’ general health. This method of gathering data is classified as

Revolt · Accepted Answer

D: a sample survey.

Question 6

A company wants to learn about the number of its employees who visit the dentist for regular checkups. Which type of study will best help the company discover this information?

Revolt · Accepted Answer

A: census

Question 7

A random number generator is used to model the patterns of animals in the wild. This type of study is called

Revolt · Accepted Answer

B: a simulation.

Question 8

Researchers call random radio listeners on the phone to rank five different popular songs. This research helps radio stations decide which songs to play more often. This method of gathering data is classified as

Revolt · Accepted Answer

D: a sample survey.

Question 9

Researchers are conducting a survey about what brand of ice cream shoppers prefer. They survey the tenth person who walks into the store and then every fifth person after that. This type of sampling is called

Revolt · Accepted Answer

D: systematic random sampling.

Question 10

News cameras take an overhead picture of a part of a crowd at an outdoor event. Journalists then count the number of people in the picture and use the sample to estimate the total number of people in the crowd. This process is an example of

Revolt · Accepted Answer

B: cluster sampling.

Pretest Answers

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