nurs-1351 exam 2 Questions Graded A+ With Complete Questions
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Course
Nurs 1351
Institution
Nurs 1351
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 - ANS c. Control
What is the overall purpose of the research design in a quantitative research study?
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nurs-1351 exam 2 Questions Graded A+
With Complete Questions
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 - ANS 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 - ANS 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 - ANS 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 - ANS a. Accuracy
A nurse is designing a study to determine whether a videotape or a written pamphlet is more
effective in teaching young women how to perform breast self-examination (BSE). Which of
these actions would provide the best control for a mediating variable?
a. Include identical content in both BSE teaching methods
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 - ANS 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. - ANS 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 - ANS 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. - ANS 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
d. When it would not make a difference in the overall study outcome - ANS b. When the
variable is an important consideration for the study's outcome
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 -
ANS 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 - ANS 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 - ANS
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 - ANS c. Randomization
The issue of control would be less important in a quantitative study with which type of research
design?
a. Exploratory
b. Experimental
c. Correlational
d. Randomized clinical trial - ANS a. Exploratory
Which situation represents a threat to internal validity in an experimental study measuring the
effect of a videotape of discharge instructions for patients who underwent coronary artery
bypass graft (CABG) surgery?
a. Both men and women undergoing CABG surgery were included as participants in the study.
b. Two new surgeons began performing CABG surgery during the study period.
c. Patients in the experimental group discussed aspects of the videotape with patients in the
control group.
d. Data collection for the videotape and control groups took 1 year. - ANS c. Patients in
the experimental group discussed aspects of the videotape with patients in the control group.
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