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WorksheetsSampling
Total questions: 12
Worksheet time: 10mins
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?
survey a random sample of employees from a list of all employees
invite all employees to indicate their choices by e-mail
place suggestion boxes at random locations in the company’s plant and offices
assemble a group with one member from each department and record the preferences of these employees
A university polled 500 of its students, randomly selecting them proportional to the number of students enrolled in each degree program. Classify the sampling method.
simple random
stratified
convenience
systematic
voluntary response
To do market research, a telemarketing firm randomly selected 1000 names from a store’s database and contacted them. Classify the sampling method.
simple random
stratified
convenience
systematic
voluntary response
To get reactions about a particular new car, readers of a car magazine were asked to mail in their answers to a survey. Classify this sampling method.
simple random
stratified
convenience
systematic
voluntary response
When a random starting point is chosen, followed by every nth individual, this sampling method is _______
simple random sampling
cluster random sampling
stratified random sampling
systematic random sampling
Systematic random sampling is used to interview residents in 25% of 80 apartments in a building. The sampling interval would be ____
4
20
5
16
A simple random sample of 200 people is selected from the 1230 male students in a university psychology course to take part in a psychological test. The population being considered is _____
200
1230
people taking part in the test
male students enrolled in a university psychology course
Which question is unbiased?
Does the school board have the right to enforce a dress code?
Do you think the MLA is doing a good job in spite of his questionable character?
Do you prefer daytime or evening television programming?
Do you think the government should be allowed to cut down trees willy-nilly to build a new highway?
Which question is biased?
Do you prefer daytime or evening television programming?
Should there be a school dress code?
Do you prefer news or mindless sitcoms?
Do you think a new highway should be built?
When a research company polls residents about their voting intentions, first-time voters are under-represented. This is an example of:
sampling bias
response bias
non-response bias
measurement bias
A radio station asks its listeners to call in to answer a survey question on spending by politicians. This is an example of:
sampling bias
response bias
non-response bias
measurement bias
In an experiment, the heights of participants were measured by two different laboratory assistants. This may lead to _______
sampling bias
response bias
non-response bias
measurement bias
