Nurs-1351 Exam 2 Study Guide
Questions With Complete Verified
Solutions.
Which of the following aspect of the study is considered a measure to maintain the uniformity
of conditions of a quantitative study?
a. Accuracy
b. Methods
c. Control
d. Validity - Answer c. Control
What is the overall purpose of the research design in a quantitative research study?
a. To determine sample size
b. To identify the problem statement
c. To provide a plan for answering the research question
d. To assist the researcher in identifying gaps in the knowledge base - Answer c. To provide a
plan for answering the research question
In which of these ways does the nurse researcher's literature review help select the appropriate
study design?
a. By enlarging the scope of the study's hypotheses
b. By objectively assessing available knowledge of the area
c. By comparing current findings with previous study findings
d. By ensuring faithfulness to the study's purpose - Answer b. By objectively assessing
available knowledge of the area
When reviewing a research report, the nurse determines that all aspects of a study
systematically and logically follow from the research problem. Which condition has been met?
a. Accuracy
b. Legitimacy
c. Internal validity
d. External validity - Answer a. Accuracy
,b. Exclude participants who already perform BSE on a regular basis
c. Limit the study participants to women who are heterosexual
d. Determine what breast cancer means to the individual participants - Answer b. Exclude
participants who already perform BSE on a regular basis
How would a nurse researcher ensure that the sample used in a quantitative study is
homogeneous?
a. Use eligibility criteria to limit extraneous variables relevant to the study.
b. Randomly assign participants to either the experimental or the control group.
c. Assign one research assistant to collect data from all participants.
d. Collect data from all participants at the same time of day. - Answer a. Use eligibility criteria
to limit extraneous variables relevant to the study.
How could a nurse researcher's use of a homogeneous sample weaken a research study?
a. By decreasing the reliability of the findings
b. By decreasing the generalizability of the findings
c. By increasing the number of participants needed to reach statistical significance
d. By increasing the risk that the findings were the result of chance alone - Answer b. By
decreasing the generalizability of the findings
Why should a nurse researcher want to limit or eliminate extraneous variables in a study?
a. More research questions would be required to account for the extraneous variables.
b. Extensive statistical analysis would be required to justify the presence of extraneous
variables.
c. Extraneous variables compete with the independent variables as explanations of the study's
outcome.
d. Manipulation of the extraneous variables increases the risk for researcher bias in the study's
outcomes. - Answer c. Extraneous variables compete with the independent variables as
explanations of the study's outcome.
When should a nurse researcher include an extraneous variable as part of a study's design?
a. When excluding the variable would limit the study's generalizability
b. When the variable is an important consideration for the study's outcome
c. When the researcher is limited by time or monetary constraints
, A study is examining the effect of a new antilipemic drug, compared with placebo, on
lipoprotein levels in postmenopausal women. Which of these actions represents the
researcher's attempt at constancy in data collection to control extraneous variables?
a. Drawing the serum lipoprotein levels of all participants at the same time of day
b. Having the same phlebotomist draw serum lipoprotein levels of all participants
c. Using the same room for drawing blood for lipoprotein levels of all participants
d. Ensuring that all participants are postmenopausal women taking lipid-lowering medication -
Answer a. Drawing the serum lipoprotein levels of all participants at the same time of day
A nurse researcher assigns half a study sample to an experimental group and the other half to a
control group. What does this action represent?
a. Instrumentation of the independent variable
b. Manipulation of the mediating variable
c. Elimination of the mediating variable
d. Manipulation of the independent variable - Answer d. Manipulation of the independent
variable
For which of these reasons would a nurse researcher choose to assign participants randomly to
groups in a study?
a. To help ensure that all groups within a study are representative of the larger population
b. To increase the chance that the study groups will be different from each other with regard to
extraneous variables
c. To help ensure that current events do not influence the outcomes of the study
d. To eliminate the need for establishing specific study criteria and participant eligibility -
Answer a. To help ensure that all groups within a study are representative of the larger
population
A nurse researcher assigns participants to experimental and control groups in such a manner
that each participant in a population has an equal chance of being selected. What is the
researcher using?
a. Selection bias
b. Convenience sampling
c. Randomization
d. Internal validity - Answer c. Randomization
Questions With Complete Verified
Solutions.
Which of the following aspect of the study is considered a measure to maintain the uniformity
of conditions of a quantitative study?
a. Accuracy
b. Methods
c. Control
d. Validity - Answer c. Control
What is the overall purpose of the research design in a quantitative research study?
a. To determine sample size
b. To identify the problem statement
c. To provide a plan for answering the research question
d. To assist the researcher in identifying gaps in the knowledge base - Answer c. To provide a
plan for answering the research question
In which of these ways does the nurse researcher's literature review help select the appropriate
study design?
a. By enlarging the scope of the study's hypotheses
b. By objectively assessing available knowledge of the area
c. By comparing current findings with previous study findings
d. By ensuring faithfulness to the study's purpose - Answer b. By objectively assessing
available knowledge of the area
When reviewing a research report, the nurse determines that all aspects of a study
systematically and logically follow from the research problem. Which condition has been met?
a. Accuracy
b. Legitimacy
c. Internal validity
d. External validity - Answer a. Accuracy
,b. Exclude participants who already perform BSE on a regular basis
c. Limit the study participants to women who are heterosexual
d. Determine what breast cancer means to the individual participants - Answer b. Exclude
participants who already perform BSE on a regular basis
How would a nurse researcher ensure that the sample used in a quantitative study is
homogeneous?
a. Use eligibility criteria to limit extraneous variables relevant to the study.
b. Randomly assign participants to either the experimental or the control group.
c. Assign one research assistant to collect data from all participants.
d. Collect data from all participants at the same time of day. - Answer a. Use eligibility criteria
to limit extraneous variables relevant to the study.
How could a nurse researcher's use of a homogeneous sample weaken a research study?
a. By decreasing the reliability of the findings
b. By decreasing the generalizability of the findings
c. By increasing the number of participants needed to reach statistical significance
d. By increasing the risk that the findings were the result of chance alone - Answer b. By
decreasing the generalizability of the findings
Why should a nurse researcher want to limit or eliminate extraneous variables in a study?
a. More research questions would be required to account for the extraneous variables.
b. Extensive statistical analysis would be required to justify the presence of extraneous
variables.
c. Extraneous variables compete with the independent variables as explanations of the study's
outcome.
d. Manipulation of the extraneous variables increases the risk for researcher bias in the study's
outcomes. - Answer c. Extraneous variables compete with the independent variables as
explanations of the study's outcome.
When should a nurse researcher include an extraneous variable as part of a study's design?
a. When excluding the variable would limit the study's generalizability
b. When the variable is an important consideration for the study's outcome
c. When the researcher is limited by time or monetary constraints
, A study is examining the effect of a new antilipemic drug, compared with placebo, on
lipoprotein levels in postmenopausal women. Which of these actions represents the
researcher's attempt at constancy in data collection to control extraneous variables?
a. Drawing the serum lipoprotein levels of all participants at the same time of day
b. Having the same phlebotomist draw serum lipoprotein levels of all participants
c. Using the same room for drawing blood for lipoprotein levels of all participants
d. Ensuring that all participants are postmenopausal women taking lipid-lowering medication -
Answer a. Drawing the serum lipoprotein levels of all participants at the same time of day
A nurse researcher assigns half a study sample to an experimental group and the other half to a
control group. What does this action represent?
a. Instrumentation of the independent variable
b. Manipulation of the mediating variable
c. Elimination of the mediating variable
d. Manipulation of the independent variable - Answer d. Manipulation of the independent
variable
For which of these reasons would a nurse researcher choose to assign participants randomly to
groups in a study?
a. To help ensure that all groups within a study are representative of the larger population
b. To increase the chance that the study groups will be different from each other with regard to
extraneous variables
c. To help ensure that current events do not influence the outcomes of the study
d. To eliminate the need for establishing specific study criteria and participant eligibility -
Answer a. To help ensure that all groups within a study are representative of the larger
population
A nurse researcher assigns participants to experimental and control groups in such a manner
that each participant in a population has an equal chance of being selected. What is the
researcher using?
a. Selection bias
b. Convenience sampling
c. Randomization
d. Internal validity - Answer c. Randomization
