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- 1. Multiple ChoiceSource of bias in which people CHOOSE to respond and usually only people with very strong opinions respondResponse BiasUndercoverageConvenience SamplingVoluntary Response
- 2. Multiple ChoiceSource of bias in which some groups of populations are LEFT OUT of the selection processResponse BiasUndercoverageConvenience SamplingVoluntary Response
- 3. Multiple ChoiceSource of bias that occurs when you ask people who are EASY to askResponse BiasConvenience SamplingNonresponseVoluntary Response
- 4. Multiple ChoiceMarianne wanted to know students' opinion on the new schedule at school. She places students' names in a container and randomly picks out 20 names.Convenience SamplingSystematic Random SamplingSimple Random SamplingVolunteer response
- 5. Multiple ChoiceWhy do we randomly select our samples?for controlreduce biasso we don't get the same answers from everyoneto eliminate confounding results
- 6. Multiple ChoiceThe teacher samples her class by selecting all students sitting at group 1 and group 5 in her classroom. This sampling technique is called?SRSStratifiedSystematicCluster
- 7. Multiple ChoiceAt a middle school, the 7th graders will conduct a survey for where to go on a field trip. Which method will result in the least biased decision?to randomly ask 8th grade students who went on a field trip last yearto randomly choose some 7th grade students to select a locationto ask all 7th grade teachers and administrators for a locationto ask the student council to choose a location
- 8. Multiple ChoiceEach student in the school is given a different number. A student is randomly selected from the first 25. That student and every 25th student thereafter are in the sample. This is what type of sampling design?SRSSystematicMultistageStratitfied
- 9. Multiple ChoiceAn SRS of 25 students is taken from each grade to form the sample. This is what type of sampling design?ClusterSRSStratifiedMultistage
- 10. Multiple ChoiceStarting at 8:00 Monday morning the first 50 students entering the front doors are selected to be in the sample. This is what type of sampling design?SystematicVoluntary ResponseClusterConvenience
- 11. Multiple ChoiceA ___ is a small portion of the population used to gather data from.Systematic Sampling MethodSamplePopulationBias
- 12. Multiple Choice
Strata are
homogeneous
heterogeneous
heterozygous
heterophonous
- 13. Multiple ChoiceIdentify the sampling design: SCPS wants to survey its employees. They pick 4 schools from the county and survey every single employee in each of the 4 buildings.clustervolunteersystematicsimple random
- 14. Multiple Choice
Which is not a method of random selection?
Using a table of random digits
Using a random number generator
Drawing numbers out of a hat
Randomly pointing to numbers on a page
- 15. Multiple Choice
Which sampling method reduces variability?
SRS
Stratified
Cluster
Systematic
- 16. Multiple Choice
Source of bias in which some groups of populations are LEFT OUT of the selection process
Response Bias
Undercoverage
Convenience Sampling
Voluntary Response
- 17. Multiple ChoiceInterview the first 30 students who enter the school in the morning.simple randomvoluntary responsesystematicconvenience
- 18. Multiple ChoiceAssign each car in a dealership a number and then use a random-number table to select the cars to be inspected.systematicsimple random sampleconveniencevolunteer response
- 19. Multiple ChoicePolitical webpages often allow readers to rate whether they strongly agree, agree, disagree, or strongly disagree with the President's decision on any given situation. This is a form of:Voluntary ResponseConvenience SamplingSimple Random SamplingSystematic Random Sampling
- 20. Multiple ChoiceMarianne wanted to know students' opinion on the new schedule at school. She places students' names in a container and randomly picks out 20 names.Convenience SamplingSystematic Random SamplingSimple Random SamplingVolunteer response
- 21. Multiple ChoiceWhy do we randomly select our samples?for controlreduce biasso we don't get the same answers from everyoneto eliminate confounding results
- 22. Multiple ChoiceDisneyland often surveys its guests as they exit a restaurant during their visit. The surveyor stands at the restaurant exit, counts the number of people leaving, and surveys every 25th guest.
This is a form of:Simple Random SampleStratified Random SampleVoluntary ResponseSystematic Random Sampling - 23. Multiple ChoiceA 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.SystematicConvenienceVoluntary ResponseSimple Random - 24. Multiple ChoiceA 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.simple randomVoluntary ResponseConvenienceSystematic Random - 25. Multiple ChoiceA teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.
She picks the student in every 5th seat.Simple RandomSystematic Randomvoluntary responseconvenience - 26. Multiple ChoiceWhich of the following is TRUE?In a multi-stage random sample, all individuals and all subsets of the sample size have an equal chance of being selected.In a stratified random sample, all individuals and all subsets of the sample size have an equal chance of being selected.In a cluster random sample, all individuals and all subsets of the sample size have an equal chance of being selected.In a simple random sample, all individuals and all subsets of the sample size have an equal chance of being selected.
- 27. Multiple ChoiceAn independent research company wants to go door to door to survey people in the city of Fontana. The company decides to number all blocks within the city limit, randomly choose 50 blocks and survey all households on each selected block.
This is an example of:Simple Random SampleStratified Random SampleCluster Random SampleSystematic Random Sampling - 28. Multiple ChoiceTo randomly select 25 basketball players from the 300 players in the NBA, I would:Number the players from 01-25, read 3 digits at a time from a random table, discarding repeats and numbers over 25, and then stop when I reach 25.Number the players from 0-299, read 2 digits at a time from a random table, discarding repeats and numbers over 299, and stop when I reach 25.Number the players from 01-299, read 2 digits at a time from a random table, discarding repeats and numbers over 300, and stop when I reach 25.Number the players from 001-300, read 3 digits at a time from a random table, discarding repeats, 000 and numbers over 300, and stop when I reach 25.
- 29. Multiple ChoiceA teacher hands out an index card and asks all of her students to write down the following information: age, height (in inches), and what grade they are in.
Which of the following best describes her method of data collection?CensusSimple Random SampleCluster Random SampleStratified Random Sample - 30. Multiple ChoiceA ___ is a large group that includes everything being studied.SampleStratified Sampling MethodPopulationVoluntary-Response
- 31. Multiple ChoiceA ___ is a small portion of the population used to gather data from.Systematic Sampling MethodSamplePopulationBias
- 32. Multiple Choice
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?
yes
no
- 33. Multiple ChoiceFarmer Joe's apple tree farm is set up in 100 rows. He counts the number of apples produced on every 10th row to estimate the number apples produced on the whole farm. This is _____________ sampling.RandomStratifiedVoluntary-ResponseSystematic
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