Question 1

The nurse researcher is attempting to formulate the basis for eligibility criteria in sample selection.Which statement will be most accurate?

Accepted Answer

A)   A sample of 1,000 practicing nurses in a selected state was surveyed.
B)   The sample consisted of 267 white girls and 258 Hispanic girls who lived in urban areas in their respective countries.
C)   The sample consisted of 40 men between the ages of 20 and 55 who were treated for burn injuries during the past decade at a specialized burn unit.
D)   The sample consisted of 57 hospital nurse executives and 178 staff registered nurses employed in a Midwestern state.E) C) and D)
F) A) and B)

Question 2

A nurse researcher is critiquing a nursing research study and reads the following description: "Five hundred randomly selected hospital patients were obtained; every tenth subject was selected for a group of 50." Which characteristics most accurately describe this sampling approach? (Select all that apply.)

Accepted Answer

A)   Nonprobability sampling
B)   Quota sampling
C)   Probability sampling
D)   Systematic sampling
E)   Convenience samplingF) B) and E)
G) C) and D) C,D

Question 3

How can a nurse researcher most accurately use the technique of power analysis?

Accepted Answer

A)   To estimate sample size
B)   To establish sampling strata
C)   To assign subjects randomly
D)   To analyze sample representativenessE) A) and C)
F) All of the above

Question 4

Why would a nurse researcher opt to use a stratified sample in a research study?

Accepted Answer

A)   The sample population is divided into subsets that are homogeneous for a particular trait or feature.
B)   The sample population is divided into subsets for random assignment into an intervention or a usual-care group.
C)   The sample population is randomly assigned to a specific subgroup that will vary from the others on the basis of type of treatment.
D)   The sample population is randomly assigned to a specific subgroup that will vary from the others on the basis of treatment duration.E) None of the above
F) All of the above

Question 5

How should a research consumer evaluate sample size in a research report?

Accepted Answer

A)   By asking how many assistants were involved in data collection
B)   By asking how representative the sample is relative to the target population
C)   By asking how great the outcome difference is between or among study groups
D)   By asking how many previous studies the researcher has conducted before on similar topicsE) None of the above
F) B) and C)

Question 6

The nurse researcher is attempting to develop a purposive sampling strategy as part of a research study.What criteria will be used to determine whether the strategy is purposive? (Select all that apply) .

Accepted Answer

A)   Validation of scale with a known-group technique
B)   Focus of study population relates to specific diagnosis.
C)   Focus of study population relates to broad, general topic.
D)   Effective posttesting of instruments
E)   Collection of exploratory dataF)  Collection of descriptive dataG) C) and E)
H) A) and E)

Question 7

How can the nurse researcher most accurately determine sample size?

Accepted Answer

A)   Consider the stamina of the researcher in data collection
B)   Consider the importance of the independent variable
C)   Consider the age of the potential subjects
D)   Consider the design of the studyE) All of the above
F) A) and B)

Question 8

Which type of sampling is most at risk for sample bias?

Accepted Answer

A)   Quota
B)   Random
C)   Purposive
D)   ConvenienceE) A) and D)
F) All of the above

Question 9

Why should a nurse researcher attempt to clearly specify exclusion criteria for a study sample?

Accepted Answer

A)   To limit the time needed to complete the study
B)   To reduce the effect of extraneous variables on the accurate evaluation of the outcome variable
C)   To eliminate the outside influences and inferences regarding the effectiveness of a behavioral intervention
D)   To ensure that an adequate sample size is accrued to meet assumptions for accurate statistical analysisE) A) and B)
F) A) and D)

Question 10

The nurse researcher selects matching as a technique in a research study.What does the technique of matching in a sampling strategy contribute to the research?

Accepted Answer

A)   Improved study design
B)   Elimination of the need for a control group
C)   Increased equivalency of the comparison group
D)   Reduced sample size by allowing subjects to serve as their own controlsE) A) and D)
F) None of the above

Question 11

The nurse researcher is designing a research study.What is considered the process of selecting representative units of a population for study in a research investigation?

Accepted Answer

A)   Sampling
B)   Snowballing
C)   Delimination
D)   Random assignmentE) B) and D)
F) A) and B)

Question 12

What would be an appropriate rationale for a nurse researcher to exclude subjects who have diabetes mellitus,are older than age 60 years,or who are HIV positive from a descriptive study examining the characteristics of chemotherapy-induced peripheral neuropathy?

Accepted Answer

A)   Mortality as a threat to validity is increased when including subjects with multiple health problems.
B)   The exclusion conditions are also associated with the development of peripheral neuropathy.
C)   The researcher has limited resources to conduct the study.
D)   The researcher has all of the exclusion characteristics.E) A) and D)
F) A) and C)

Question 13

Why should a nurse researcher be concerned about establishing clear eligibility criteria for inclusion in a study sample?

Accepted Answer

A)   To increase the homogeneity of the sample
B)   To decrease the homogeneity of the sample
C)   To increase the size of the sample
D)   To decrease the size of the sampleE) B) and C)
F) All of the above

Question 14

The researcher used word of mouth to accrue a sample of participants.What is the most accurate description of this technique?

Accepted Answer

A)   Referral
B)   Networking
C)   Recruitment
D)   Quasi-probabilityE) C) and D)
F) B) and C)

Question 15

The nurse researcher is developing inclusion and exclusion criteria.Which statement is most accurate?

Accepted Answer

A)   These criteria are not needed when the population being studied is composed of events.
B)   These criteria serve to ensure that the characteristics of the sample and the population are congruent.
C)   Inclusion criteria are used to define the independent variables, and exclusion criteria are used to define dependent variables.
D)   Inclusion criteria are used to define the dependent variables, and exclusion criteria are used to define independent variables.E) A) and B)
F) None of the above B

Question 16

Why should a nurse researcher be particularly concerned about having a small sample size?

Accepted Answer

A)   There is increased risk of obtaining a nonrepresentative sample.
B)   There is increased risk of a study subject interacting with another study subject.
C)   There is increased potential for loss of confidentiality.
D)   There is increased regression toward the mean.E) A) and D)
F) A) and C)

Question 17

How can a nurse researcher tell the difference in an accessible population and a target population?

Accepted Answer

A)   The accessible population meets the inclusion criteria, and the target population meets the exclusion criteria.
B)   The target population meets the inclusion criteria, and the accessible population meets the exclusion criteria.
C)   The accessible population represents the entire set of cases the researcher wishes to study, and the target population represents that part of the accessible population that could feasibly be included in the study.
D)   The target population represents the entire set of cases the researcher wishes to study, and the accessible population represents that part of the target population that could feasibly be included in the study.E) B) and D)
F) None of the above D

Question 18

How can the nurse researcher know that a sample is representative of a population?

Accepted Answer

A)   The sample is homogeneous.
B)   All units of a population are included.
C)   The most readily accessible persons are used as subjects.
D)   The characteristics of the sample closely approximate those of the population.E) C) and D)
F) A) and D)

Question 19

A nurse researcher is critiquing a research study on hospital safety.The researcher notes a sample description that states,"From a list of 5,000 randomly selected acute care hospitals,the population was stratified by number of beds and academic affiliation … ." Which terms most accurately describe this approach? (Select all that apply.)

Accepted Answer

A)   Probability sampling
B)   Purposive sampling
C)   Multistage sampling
D)   Stratified random sampling
E)   Quota samplingF) A) and B)
G) B) and E)

Question 20

The nurse researcher is attempting to determine whether a study is replicable.What factors should be considered when determining this? (Select all that apply)

Accepted Answer

A)   Sampling strategy used
B)   Cost of sampling approach selected
C)   Demographic characteristics of the sample
D)   Inclusion criteria
E)   Ethical consequences of recruiting subjects for the studyF)  Exclusion criteriaG)  Screening and enrollment protocolH) A) and F)
I) E) and G)

Exam 10: Sampling

The nurse researcher is attempting to formulate the basis for eligibility criteria in sample selection.Which statement will be most accurate?

Correct Answer
verified

Correct Answer
verified
C,D

How can a nurse researcher most accurately use the technique of power analysis?

Correct Answer
verified

Why would a nurse researcher opt to use a stratified sample in a research study?

Correct Answer
verified

How should a research consumer evaluate sample size in a research report?

Correct Answer
verified

The nurse researcher is attempting to develop a purposive sampling strategy as part of a research study.What criteria will be used to determine whether the strategy is purposive? (Select all that apply) .

Correct Answer
verified

How can the nurse researcher most accurately determine sample size?

Correct Answer
verified

Which type of sampling is most at risk for sample bias?

Correct Answer
verified

Why should a nurse researcher attempt to clearly specify exclusion criteria for a study sample?

Correct Answer
verified

The nurse researcher selects matching as a technique in a research study.What does the technique of matching in a sampling strategy contribute to the research?

Correct Answer
verified

The nurse researcher is designing a research study.What is considered the process of selecting representative units of a population for study in a research investigation?

Correct Answer
verified

What would be an appropriate rationale for a nurse researcher to exclude subjects who have diabetes mellitus,are older than age 60 years,or who are HIV positive from a descriptive study examining the characteristics of chemotherapy-induced peripheral neuropathy?

Correct Answer
verified

Why should a nurse researcher be concerned about establishing clear eligibility criteria for inclusion in a study sample?

Correct Answer
verified

The researcher used word of mouth to accrue a sample of participants.What is the most accurate description of this technique?

Correct Answer
verified

The nurse researcher is developing inclusion and exclusion criteria.Which statement is most accurate?

Correct Answer
verified
B

Why should a nurse researcher be particularly concerned about having a small sample size?

Correct Answer
verified

How can a nurse researcher tell the difference in an accessible population and a target population?

Correct Answer
verified
D

How can the nurse researcher know that a sample is representative of a population?

Correct Answer
verified

Correct Answer
verified

The nurse researcher is attempting to determine whether a study is replicable.What factors should be considered when determining this? (Select all that apply)

Correct Answer
verified

Exam 10: Sampling

The nurse researcher is attempting to formulate the basis for eligibility criteria in sample selection.Which statement will be most accurate?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedC,D

How can a nurse researcher most accurately use the technique of power analysis?

Correct AnswerverifiedShow Answer

Why would a nurse researcher opt to use a stratified sample in a research study?

Correct AnswerverifiedShow Answer

How should a research consumer evaluate sample size in a research report?

Correct AnswerverifiedShow Answer

The nurse researcher is attempting to develop a purposive sampling strategy as part of a research study.What criteria will be used to determine whether the strategy is purposive? (Select all that apply) .

Correct AnswerverifiedShow Answer

How can the nurse researcher most accurately determine sample size?

Correct AnswerverifiedShow Answer

Which type of sampling is most at risk for sample bias?

Correct AnswerverifiedShow Answer

Why should a nurse researcher attempt to clearly specify exclusion criteria for a study sample?

Correct AnswerverifiedShow Answer

The nurse researcher selects matching as a technique in a research study.What does the technique of matching in a sampling strategy contribute to the research?

Correct AnswerverifiedShow Answer

The nurse researcher is designing a research study.What is considered the process of selecting representative units of a population for study in a research investigation?

Correct AnswerverifiedShow Answer

What would be an appropriate rationale for a nurse researcher to exclude subjects who have diabetes mellitus,are older than age 60 years,or who are HIV positive from a descriptive study examining the characteristics of chemotherapy-induced peripheral neuropathy?

Correct AnswerverifiedShow Answer

Why should a nurse researcher be concerned about establishing clear eligibility criteria for inclusion in a study sample?

Correct AnswerverifiedShow Answer

The researcher used word of mouth to accrue a sample of participants.What is the most accurate description of this technique?

Correct AnswerverifiedShow Answer

The nurse researcher is developing inclusion and exclusion criteria.Which statement is most accurate?

Correct AnswerverifiedB

Why should a nurse researcher be particularly concerned about having a small sample size?

Correct AnswerverifiedShow Answer

How can a nurse researcher tell the difference in an accessible population and a target population?

Correct AnswerverifiedD

How can the nurse researcher know that a sample is representative of a population?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The nurse researcher is attempting to determine whether a study is replicable.What factors should be considered when determining this? (Select all that apply)

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified
C,D

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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B

Correct Answer
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Correct Answer
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D

Correct Answer
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Correct Answer
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Correct Answer
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