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EVIDENCE BASED EXAM 3 QUESTIONS
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Nurs
620
Johns Hopkins University
School of Nursing
HIGH YIELDS QUESTIONS
NEWEST MODEL 2026 EXAM LATEST
VERSION SOLVED QUESTIONS &
ANSWERS VERIFIED 100 %
Exam
, Page 2 of 47
Nurs620 Exam 3 Practice Quiz Evidence-Based Care
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 assist the researcher in identifying gaps in the knowledge based
d. To provide the plan for answering the research question
d. To provide the plan for answering the research question
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
a.exploratory
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.
c. Extraneous variables compete with the independent variables as explanations of
the study's outcome.
How would a nurse researcher ensure that the sample used in a quantitative
study is homogeneous?
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a. Use eligibility criteria to limit extraneous variables relevant to the study.
b. Randomly assign subjects to either the experimental or the control group.
c. Assign one research assistant to collect data from all subjects.
d. Collect data from all subjects at the same time of day.
a. Use eligibility criteria to limit extraneous variables relevant to the study.
Which factors would be considered threats to internal validity? (Select all that
apply.)
a. Time
b. Selection effects
c. History
d. Testing
e. Subject availability
f. Cost
g. Selection bias
c. History
d. Testing
g. Selection bias
A nurse researcher should be concerned about an instrument's degree of
internal consistency because it means what?
a. The instrument is appropriate to use to measure a single concept.
b. The instrument has low measurement error and high error variance.
c. More refinement of the instrument is needed before it can be applied.
d. The instrument is valid, but the reliability has yet to be determined.
a. The instrument is appropriate to use to measure a single concept.
Which type of validity is most difficult to establish?
a. Content validity
b. Construct validity
c. Predictive validity
d. Concurrent validity
b. Construct validity
What type of validity is demonstrated by examining the extent to which a
passing grade in a nursing course is correlated with passing the registered
nurse licensure examination?
a. Content validity
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b. Construct validity
c. Predictive validity
d. Concurrent validity
c. Predictive validity
When the nurse researcher demonstrates that an instrument is highly reliable,
which type of error is reduced?
a. Random error
b. Variance error
c. Persistent error
d. Systematic error
d. Systematic error
Nurse researchers critiquing research reports should be concerned with the
assessment of the validity and reliability of study instruments to do what?
a. To determine the utility of the instruments for triangulation
b. To assess the relationships between the hypotheses and the research
questions
c. To determine whether the concepts and variables were measured
adequately
d. To assess whether the concept under study is being treated as a dependent
or an independent variable
c. To determine whether the concepts and variables were measured adequately
What type of threat to validity is minimized by the use of a Solomon four-group
design?
a. Mortality
b. Selection bias
c. Testing
d. Antecedent variable
c. Testing
19. A planned quasi-experimental study using a nonequivalent control group
design has several extraneous variables that threaten its internal validity. The
nurse researcher's actions should be based on which understanding?
a. The results of the study will not be statistically significant.
b. The random assignment of subjects to groups will nullify the intervening
variables.
EVIDENCE BASED EXAM 3 QUESTIONS
Download now
Nurs
620
Johns Hopkins University
School of Nursing
HIGH YIELDS QUESTIONS
NEWEST MODEL 2026 EXAM LATEST
VERSION SOLVED QUESTIONS &
ANSWERS VERIFIED 100 %
Exam
, Page 2 of 47
Nurs620 Exam 3 Practice Quiz Evidence-Based Care
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 assist the researcher in identifying gaps in the knowledge based
d. To provide the plan for answering the research question
d. To provide the plan for answering the research question
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
a.exploratory
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.
c. Extraneous variables compete with the independent variables as explanations of
the study's outcome.
How would a nurse researcher ensure that the sample used in a quantitative
study is homogeneous?
, Page 3 of 47
a. Use eligibility criteria to limit extraneous variables relevant to the study.
b. Randomly assign subjects to either the experimental or the control group.
c. Assign one research assistant to collect data from all subjects.
d. Collect data from all subjects at the same time of day.
a. Use eligibility criteria to limit extraneous variables relevant to the study.
Which factors would be considered threats to internal validity? (Select all that
apply.)
a. Time
b. Selection effects
c. History
d. Testing
e. Subject availability
f. Cost
g. Selection bias
c. History
d. Testing
g. Selection bias
A nurse researcher should be concerned about an instrument's degree of
internal consistency because it means what?
a. The instrument is appropriate to use to measure a single concept.
b. The instrument has low measurement error and high error variance.
c. More refinement of the instrument is needed before it can be applied.
d. The instrument is valid, but the reliability has yet to be determined.
a. The instrument is appropriate to use to measure a single concept.
Which type of validity is most difficult to establish?
a. Content validity
b. Construct validity
c. Predictive validity
d. Concurrent validity
b. Construct validity
What type of validity is demonstrated by examining the extent to which a
passing grade in a nursing course is correlated with passing the registered
nurse licensure examination?
a. Content validity
, Page 4 of 47
b. Construct validity
c. Predictive validity
d. Concurrent validity
c. Predictive validity
When the nurse researcher demonstrates that an instrument is highly reliable,
which type of error is reduced?
a. Random error
b. Variance error
c. Persistent error
d. Systematic error
d. Systematic error
Nurse researchers critiquing research reports should be concerned with the
assessment of the validity and reliability of study instruments to do what?
a. To determine the utility of the instruments for triangulation
b. To assess the relationships between the hypotheses and the research
questions
c. To determine whether the concepts and variables were measured
adequately
d. To assess whether the concept under study is being treated as a dependent
or an independent variable
c. To determine whether the concepts and variables were measured adequately
What type of threat to validity is minimized by the use of a Solomon four-group
design?
a. Mortality
b. Selection bias
c. Testing
d. Antecedent variable
c. Testing
19. A planned quasi-experimental study using a nonequivalent control group
design has several extraneous variables that threaten its internal validity. The
nurse researcher's actions should be based on which understanding?
a. The results of the study will not be statistically significant.
b. The random assignment of subjects to groups will nullify the intervening
variables.
