Quiz
Chapter 3
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Questions in this quiz (20)
1Which of the following is NOT a valid probability sample?
- AA simple random sample
- BA stratified sample
- CA multistage sample
- DA voluntary response sample
2A reporter for the university newspaper wants to find out the opinions that all BYU students have about the university health center. During a class break, he goes to the health center, contacts a few students as they exit, and asks them to fill out a survey. What type of sample is this?
- AA simple random sample
- BA stratified sample
- CA multistage sample
- DA convenience sample
3Educators in California are concerned about a recent newspaper article reporting that students in the United States are falling behind students in other nations in their math skills. They decide to sample 10th grade students throughout the state and test their mathematics skills. They first randomly select 10 school districts. From each of these 10 school districts they randomly select three high schools. From these 3 high schools they randomly select 10 students and test them. What type of sample is this?
- AA simple random sample
- BA stratified sample
- CA multistage sample
- DA convenience sample
4Suppose a researcher is interested in the average ACT score for high school students in Illinois. She randomly selects 20 counties and then randomly selects 3 high schools from each selected county and then asks each student in the selected high schools what their ACT score was. What kind of sample is this?
- ASimple random sample (SRS)
- BStratified sample
- CConvenience sample
- DMultistage sample
5A popular magazine is interested in the average amount of time that their readers spend on the internet each day. They randomly survey 100 of their female readers and 100 of their male readers and ask them about their average internet use. What type of sample is this?
- AA convenience sample
- BA volunteer sample
- CA stratified sample
- DA Simple Random Sample
6Which of the following describes a valid sampling procedure?
- AInterviewer uses a set of personal criteria to pick respondents
- BRespondents are chosen by an impersonal chance device
- CEach respondent chooses whether or not to respond
- DThe first 50 people at a shopping mall are selected
7Taking a valid simple random sample eliminates all biases, including question wording bias and interviewer bias.
- ATrue
- BFalse
8The nonprofit group Public Agenda conducted telephone interviews with parents of high school children. Interviewers chose equal numbers of black, white, and Hispanic parents by randomly selecting from within each race using student records. One question asked was "Are the high schools in your state doing an excellent, good, fair, or poor job, or do you not know enough to say?" What type of sample is this?
- AConvenience Sample
- BSimple random sample
- CStratified sample
- DMultistage sample
9Which one of the following is NOT a consequence of lack of randomization?
- AResults could be biased
- BA lurking variable is likely confounded with the explanatory variable
- CLaws of probability cannot be used to measure uncertainty in conclusions
- DNot enough individuals will be available to measure chance variation
10A high school teacher wants more information about her students' study habits. She writes each of her students' names on an identical slip of paper and places them in a hat. After mixing up the papers, she selects 30 students from the hat. She then asks the question, "How many hours a week do you study outside of school, 0-3, 4-6, or more than six?" and records their responses. What type of sample is this?
- AA simple random sample
- BA stratified sample
- CA multistage sample
- DA convenience sample
11A television station is interested in predicting whether or not voters are in favor of an increase in the state sales tax. It asks its viewers to phone in and indicate whether they support or are opposed to the proposed increase in order to generate additional revenue for education. What type of sampling design is this?
- AA simple random sample.
- BA stratified sample.
- CA multistage sample.
- DA voluntary response sample.
12A computer manufacturer has just received a shipment of 8000 computer chips. In order to ensure that the shipment meets their quality standards, they want to sample a few chips and make a detailed examination of the sample. The chips are packaged individually and have serial numbers. If they use a statistical software package to randomly select serial numbers for 20 chips for inspection, what type of sampling is this?
- AA simple random sample.
- BA stratified sample.
- CA convenience sample.
- DA multistage sample.
13High school students are selected by choosing at random several of the city's high schools and then randomly selecting some of the students from those selected high schools. What sampling technique is being used?
- AMultistage sampling.
- Bsimple random sampling.
- Cstratified sampling.
- Dconvenience sampling.
14Without random selection, we cannot appropriately apply the laws of probability to perform inference.
- ATrue
- BFalse
15The college of humanities in a large university was accused of discrimination in their faculty hiring. Twenty records of the recent female applicants who were not hired and twenty records of recent male applicants who were not hired were randomly selected and compared with the records of the recent hires. What type of sampling design is this?
- AA simple random sample.
- BA stratified sample.
- CA convenience sample.
- DA multistage sample.
16Why do we sample?
- AA census is too expensive.
- BA census is time consuming.
- CA census may be impractical.
- DAll of the above.
17 Convenience sampling is a type of probability sampling design.
- ATrue
- BFalse
18A large university in the western United States wants to survey the faculty regarding its plan to combine the spring and summer terms into one semester. It randomly selects 5 colleges on its campus and from each of these colleges, randomly selects 4 departments. Within the chosen departments, 4 faculty members are selected to be included in the sample. What type of sampling design is this?
- AA simple random sample.
- BA stratified sample.
- CA multistage sample.
- DA convenience sample.
19When sampling from the population of interest, it is a good idea to have a representative sample.
- ATrue
- BFalse
20The group we want to study or learn something about is known as the
- Asample
- Bpopulation
- Cindividual
- Dgroup
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- Statistics Quiz on Chapter 3, created by sarah wood on 24/01/2019.
- Author
- sarah wood
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- English
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