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23 questions
Each student at a school has a student identification number. Counselors have a computer generate 50 random identification numbers and those students are asked to take a survey. What type of sampling method is being used?
Simple Random Sampling
Stratified Random Sampling
Cluster Random Sampling
Systematic Random Sampling
A principal orders t-shirts and wants to check some of them to make sure they were printed properly. She randomly selects 2 of the 10 boxes of shirts and checks every shirt in those 2 boxes.
Simple Random Sampling
Stratified Random Sampling
Cluster Random Sampling
Systematic Random Sampling
A school chooses 3 randomly selected athletes from each of its sports teams to participate in a survey about athletics at the school. What type of sampling method is being used?
Simple Random Sampling
Stratified Random Sampling
Cluster Random Sampling
Systematic Random Sampling
While students are lined up for school pictures, a teacher passes out a survey to every 10th student. What type of sampling method is being used?
Simple Random Sampling
Stratified Random Sampling
Cluster Random Sampling
Systematic Random Sampling
Marianne wanted to know students' opinion on the new schedule at school. She places students' names in a container and randomly picks out 20 names. What type of sampling method is being used?
Convenience Sampling
Systematic Random Sampling
Simple Random Sampling
Volunteer response
Why do we randomly select our samples? (There is more than one correct answer)
for fun
reduce bias
To ensure our sample represents our population
make our study more reliable
it's not really necessary
A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.
She selects the five closest to her desk. What type of sampling method is being used?
simple random
Voluntary Response
Convenience
Systematic Random
What type of sampling method is being used?
A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.
She selects the first five who raise their hands.
Systematic
Convenience
Volunteer Response
Simple Random
Elise, a supermarket employee, approached 50 random customers and asked whether they would be willing to discuss what they like most about the store. She interviewed the 22 who said yes. Is this sample of the supermarket's customers likely to be biased? If "Yes" what type of bias is it?
Not biased.
Biased. Non-response bias.
Biased. Measurement bias.
Biased. Response bias.
Leslie wants to find out what show students watch the most. She surveyed the 9 youngest students in the elementary school. Is this sample of the students in the school likely to be representative? If "No" , what type of bias is this?
No bias.
Measurement bias.
Sample bias.
Non-response bias.
Becky wants to know if she should sell cranberry muffins at her bakery. She asks every customer who buys blueberry muffins if they would buy cranberry muffins. Is this a representative sample?
Yes, it does not include people who would buy cranberry muffins but do not like blueberry muffins
No, it does not include people who would buy cranberry muffins but do not like blueberry muffins
Yes, it does include people who would buy cranberry muffins but do not like blueberry muffins
No, it does include people who would buy cranberry muffins but do not like blueberry muffins
Identify the Population:
Guangzhou Public Schools randomly selected 230 teachers to find out which technology resource it's teachers feel is the most effective.
All Guangzhou teachers
A large company surveys 100 employees by taking random samples of 10 managers and 90 non-managerial employees. What type of sampling is it?
A student council surveys 100 students by taking random samples of 25 freshmen, 25 sophomores, 25 juniors, and 25 seniors. What type of sample is it?
Which of these is the best example of response bias?
Some people might not answer their phone after repeated calls.
Some people might feel pressured to say they floss daily even though they don't.
People with unlisted phone numbers or people with cell phones might be left out the sample.
Some people might refuse to tell a stranger on the phone about their flossing habits.
People without phones cannot be a part of the survey, and their flossing habits may be different than those in the sample.
A high school has a policy that students' phones must be kept away during class. A principal used the school roster to poll a random sample of 50 students, and only 10% said that they ever had their phone out during class. The next day, the principal observed classrooms and noticed that approximately 25% of students had their phone out at some point during class. Which of these is the most likely to produce a bias in the principal's poll?
Bias from under coverage
Bias from using voluntary response
Bias from using a convenience sample
Response bias
Non-Response bias
“In light of the poor showing at the box office, do you think this movie deserves to be nominated for a Genie Award?” Is this a biased question? If yes, what type of bias is this?
No, it is not a biased question.
Yes, it is a biased question. Sample bias.
Yes, it is a biased question. Measurement bias
(Loaded question)
Yes, it is a biased question. Measurement bias (Leading question)
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