Unit 5 Review Quiz

What is the best sampling technique to use for determining the average speed of the cars on a section of highway?

• Simple random sample

• Convenience sample

• Systematic sample

• Voluntary sampling

Which method is most likely to produce a random sample of the members of your class?

• Listing the first six students that come to mind

• Choosing the five oldest students in the class

• Writing the name of each student on a separate piece of paper and then drawing these slips from a hat

• Asking each student to volunteer

A large corporation wants to find out which benefits plan its employees would prefer. Which procedure would be most likely to obtain a statistically unbiased sample?

• Surveying a random sample of employees from a list of all employees

• Inviting all employees to indicate their choices by e-mail

• Placing suggestion boxes at random locations in the company’s plant and offices

• Assembling a group with one member from each department and recording the preferences of these employees

A college president wants to find out which courses students consider to be most beneficial. Which procedure would be most likely to produce a statistically unbiased sample?

• Asking students to mail in a questionnaire

• Surveying a random sample of students taken from the list of all students

• Surveying the first hundred students on an alphabetical list

• Having students complete a questionnaire on the college web site

A pollster wants to find out if citizens are satisfied with the city council. Which procedure would be appropriate for obtaining a statistically unbiased sample?

• Interviewing people at a popular local shopping center

• Surveying people whose names have been randomly chosen from the telephone book

• Placing an advertisement in the local newspaper asking for mail-in responses

• Mailing a questionnaire to people whose names have been chosen randomly from a list of customers of the municipal utility company

The group of individuals who actually have a chance of being selected for a survey is called what?

• Population

• Sample space

• Sampling frame

• Target group

The set of all individuals who belong to the group being studied by a survey is called what?

• Population

• Sample space

• Sampling frame

• Target group

What sampling technique might a television reporter use when interviewing stranded travelers at an airport during a snowstorm about the efficiency of air travel in Canada?

• Random sampling

• Convenience sampling

• Stratified sampling

• Systematic sampling

Which sampling technique is likely used by a soap company distributing free samples of a new laundry detergent to all households in several randomly selected neighborhoods?

• Cluster sampling

• Stratified sampling

• Simple random sampling

• Systematic sampling

For a school newspaper survey to find out which presidential candidate is supported by the majority of students, what is the most appropriate sampling method?

• Convenience sampling

• Quota sampling

• Simple random sampling

• Voluntary response sampling