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20 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?
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?
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?
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
True or False: All samples lead to a good prediction about an entire population.
True
False
Each of the 29 NBA teams has 12 players. A sample of 58 players is to be chosen as follows. Each team will be asked to place 12 cards with their players' names into a hat and randomly draw out two names. The two names from each team will be combined to make up the sample. Will this method result in a simple random sample of the 348 basketball players?
Yes, because each player has the same chance of being selected.
Yes, because each team is equally represented.
Yes, because this is an example of stratified sampling, which is a special case of simple random sampling.
No, because the teams are not chosen randomly.
No, because not every group of 58 players has the same chance of being selected.
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