Question 1

A research study examined the partying styles of students in fraternities, in sororities, living in dorms, and living in private residences. Ten students from each group were included in the research. This is an example of which type of sampling strategy?

Accepted Answer

A)  Quota sampling
B)  Cluster sampling
C)  Purposive sampling
D)  Stratified random samplingE) A) and B)
F) None of the above

Question 2

The researcher conducts a qualitative study that explores the feelings of nurses who care for victims of intentional burning. What sampling methods are most appropriate for this study?

Accepted Answer

A)  Quota sampling
B)  Purposive sampling
C)  Cluster sampling
D)  Stratified random sampling
E)  Systematic samplingF) Snowball samplingG) Theoretical samplingH) C) and F)
I) A) and B)

Question 3

A hospital-based nurse researcher at Hospital A conducts experimental research on a rotating bed and its effect on prevention of pressure ulcers in hip fracture patients over 80 years of age with cognitive functional impairment. Because there are so few patients over 80 with fractured hips and cognitive functional impairment, and because the researcher anticipates problems with obtaining consent, a convenience sample is utilized and every patient who meets the criteria and consents is used in the study. The bed, although expensive, is found to be much more effective in preventing pressure ulcers in this population than is turning alone. The study is published. What are the implications of applying these findings, considering the researcher's use of a convenience sample?

Accepted Answer

A)  The findings can be applied to similar patients who come to Hospital A, with the understanding that data collection will continue and represent a second study, since the research is not yet replicated.
B)  The findings may be applicable to similar patients who come to Hospital B, but without replication, this use cannot be mandated in the research report.
C)  The rotating bed should not be used outside of Hospital A at all until a replication study is conducted.
D)  The study findings probably represent a Type I error. It is doubtful that use of a rotating bed could produce significant findings with a convenience sample.
E)  The widespread use of the rotating bed has not been supported.F) Generalization is appropriate only extremely cautiously and in the same site in which the study was conducted, with tracking of subsequent data.G) A) and B)
H) A) and C)

Question 4

The population parameter for firefighters on Long Island is 79% male. The sample statistic for three fire stations is 73% male. Why wasn't the sample statistic the same as the population parameter?

Accepted Answer

A)  Sampling error was present.
B)  Random variation might have occurred.
C)  Systematic variation might have occurred.
D)  The sample was fairly small.
E)  The sample was not perfectly representative.F) The population parameter is inaccurate.G) D) and E)
H) E) and F)

Question 5

A teacher is supposed to be randomly assigning students to experimental and control groups, for participation in a learning project mandated by the school district. The teacher has an alphabetized master list of the students, numbered 1 through 30. Which is the most logical way to randomly assign the students to group?

Accepted Answer

A)  Put numbers 1 to 30 in a hat, draw them out one by one, and put them into alternating groups.
B)  Place the first 15 subjects from the alphabetized list in one group and the last 15 in the other group.
C)  Ignore numbers, and let the students choose their groups.
D)  Put numbers 1 to 30 into a hat and draw one, placing it in the experimental group. Then find a student with similar gender, attributes, and abilities, and put that one into the control group. Then go back to the hat for the next experimental subject.E) A) and B)
F) None of the above

Question 6

A pollster wants to obtain a large sample of voters with the least amount of trouble. Each subject is asked to complete a pencil-paper questionnaire containing seven multiple-choice questions. Each person completing the survey receives a $1 off coupon for a regional coffee chain. The pollster decides to stand outside 20 different supermarkets for 4 hours each and ask patrons to participate in the research. Which method of sampling is this?

Accepted Answer

A)  Network or snowball sampling
B)  Purposive sampling
C)  Convenience sampling
D)  Cluster samplingE) A) and D)
F) B) and C)

Question 7

Performing a power analysis allows the researcher to calculate the size needed to achieve an adequate sample. Why is it preferable to calculate this number in the design phase of a quantitative study?

Accepted Answer

A)  Knowing the sample size allows the researcher to strategize how to best obtain adequate participation in the study.
B)  Performing a power analysis increases the research's potential for publication.
C)  Conducting a power analysis decreases the chance of Type I error.
D)  Conducting a power analysis increases effect size.
E)  The institutional review paperwork must include a maximum sample size.F) All of the above
G) C) and D)

Exam 15: Sampling

Correct Answer
verified

The researcher conducts a qualitative study that explores the feelings of nurses who care for victims of intentional burning. What sampling methods are most appropriate for this study?

Correct Answer
verified

Correct Answer
verified

The population parameter for firefighters on Long Island is 79% male. The sample statistic for three fire stations is 73% male. Why wasn't the sample statistic the same as the population parameter?

Correct Answer
verified

Correct Answer
verified

Performing a power analysis allows the researcher to calculate the size needed to achieve an adequate sample. Why is it preferable to calculate this number in the design phase of a quantitative study?

Correct Answer
verified

A research study examined the partying styles of students in fraternities, in sororities, living in dorms, and living in private residences. Ten students from each group were included in the research. This is an example of which type of sampling strategy?

Correct Answer
verified

Exam 15: Sampling

Correct AnswerverifiedShow Answer

The researcher conducts a qualitative study that explores the feelings of nurses who care for victims of intentional burning. What sampling methods are most appropriate for this study?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The population parameter for firefighters on Long Island is 79% male. The sample statistic for three fire stations is 73% male. Why wasn't the sample statistic the same as the population parameter?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Performing a power analysis allows the researcher to calculate the size needed to achieve an adequate sample. Why is it preferable to calculate this number in the design phase of a quantitative study?

Correct AnswerverifiedShow Answer

A research study examined the partying styles of students in fraternities, in sororities, living in dorms, and living in private residences. Ten students from each group were included in the research. This is an example of which type of sampling strategy?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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