Stats Quiz Review

A political candidate wants to know what percent of his constituency favors Referendum A on an upcoming ballot election. His staff asks each person who comes into the candidate's office for three days whether they support Referendum A. What sampling method is used?

• convenience sample
• voluntary response
• systematic random sample
• cluster sample

A news program asks viewers to call in with their opinions on whether taxes should be increased to support education. What sampling method is used?

• simple random sample
• cluster sample
• voluntary response
• stratified random sample

To see if students would be interested in going on a field trip to Raleigh in history class, all students' names are put into a hat and 30 are drawn to ask their opinion. What sampling method is used?

• convenience 
• voluntary response
• systematic random sample
• simple random sample

Scientists study the effects of the phases of the moon on the levels of low tide and high tide in 200 coastal cities in the US for a period of 12 months. What study method is discribed?

• experiment
• simulation
• observational study
• survey

A pet food company randomly chooses two groups of 20 puppies for a study. One group eats a new brand of dog food and the other group eats an off-brand of dog food for a period of 4 weeks. Researchers record muscular and skeletal growth rates in both groups. What study method is described?

• observational study
• experiment
• simulation
• survey

For a class project, students in Health class ask every tenth student entering the library if they eat breakfast in the morning. What study method is described?

• observational study
• experiment
• simulation
• survey

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
• selecting the first six students to arrive at class

Tags

CCSS.HSS.IC.B.3

A large corporation wants to find out which benefits plan it's 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
• placing suggestion boxes at random locations in the company's plant and offices
• inviting all employees to indicate their choices by email 
• 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 of the most benefit to them. Which procedure would be most likely to produce a statistically unbiased sample?

• asking students to mail in a questionnaire
• surveying a random list of students taken from a list of all students 
• surveying the first hundred students on an alphabetical list
• having students complete a questionnaire on the college website

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

• interviewing people in a popular local shopping center
• surveying people whose names have been randomly chosen from a list of all citizens of the city
• 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 unity company