1
Solution Manual for Statistics for Nursing
Research A Workbook for Evidence-Based
Practice 4th Edition Susan K. Grove Actual
Exam 2026/2027 Complete Exam-Style
Questions with Detailed Rationales | 100%
Verified | Pass Guaranteed – A+ Graded
Part I: Foundations of Nursing Research, Evidence-Based
Practice & Study Design (Questions 1-20)
Q1: A nurse researcher is planning a study to examine whether a
new patient education program reduces hospital readmission
rates among heart failure patients. The researcher wants to
manipulate whether patients receive the new program or
standard care, then compare outcomes between groups. Which
type of research design best describes this study?
A. Descriptive correlational design
B. Experimental design
C. Phenomenological qualitative design
D. Retrospective cohort design [CORRECT]
Correct Answer: B
,2
Rationale: This choice is correct because experimental designs
involve the researcher actively manipulating an independent
variable (in this case, the type of patient education program) and
measuring its effect on a dependent variable (readmission rates)
while controlling for other factors through randomization or
comparison groups.
Q2: When conducting a literature review for an evidence-based
practice project on fall prevention in elderly hospitalized
patients, a nurse identifies a well-designed randomized
controlled trial (RCT) from 2019 showing that bedside alarms
reduce falls by 35%. According to the hierarchy of evidence,
where does this study rank?
A. Level I – Systematic reviews of RCTs
B. Level II – Single well-designed RCT [CORRECT]
C. Level III – Controlled trials without randomization
D. Level IV – Cohort and case-control studies
Correct Answer: B
Rationale: The best answer is Level II because single, well-
designed randomized controlled trials occupy this position in the
evidence hierarchy, sitting just below systematic reviews of
multiple RCTs and above non-randomized controlled studies.
,3
Q3: A nursing student is reviewing a research article and notices
that participants were selected because they happened to be
admitted to the medical-surgical unit during the data collection
period and agreed to participate. What sampling method was
most likely used?
A. Simple random sampling
B. Stratified random sampling
C. Convenience sampling [CORRECT]
D. Purposive sampling
Correct Answer: C
Rationale: This matches the definition of convenience sampling,
where researchers select participants who are readily available
and accessible—in this case, patients who are already
hospitalized in the unit during the study period and willing to
participate.
Q4: In a study examining the relationship between nurse staffing
ratios and patient satisfaction scores, the researcher measures
staffing ratios (number of patients per nurse) and then collects
, 4
patient satisfaction survey results. In this study, which variable
is the independent variable?
A. Patient satisfaction scores
B. Nurse staffing ratios [CORRECT]
C. Hospital size
D. Length of patient stay
Correct Answer: B
Rationale: The independent variable is the one that is presumed
to influence or predict the outcome; here, nurse staffing ratios
are being examined as the potential factor that affects patient
satisfaction, making it the independent (predictor) variable.
Q5: A nurse researcher wants to understand the lived experience
of family caregivers who provide end-of-life care to loved ones
at home. The researcher conducts in-depth interviews and
analyzes the narratives for common themes. This is an example
of which research approach?
A. Quantitative experimental research
B. Quantitative descriptive research
Solution Manual for Statistics for Nursing
Research A Workbook for Evidence-Based
Practice 4th Edition Susan K. Grove Actual
Exam 2026/2027 Complete Exam-Style
Questions with Detailed Rationales | 100%
Verified | Pass Guaranteed – A+ Graded
Part I: Foundations of Nursing Research, Evidence-Based
Practice & Study Design (Questions 1-20)
Q1: A nurse researcher is planning a study to examine whether a
new patient education program reduces hospital readmission
rates among heart failure patients. The researcher wants to
manipulate whether patients receive the new program or
standard care, then compare outcomes between groups. Which
type of research design best describes this study?
A. Descriptive correlational design
B. Experimental design
C. Phenomenological qualitative design
D. Retrospective cohort design [CORRECT]
Correct Answer: B
,2
Rationale: This choice is correct because experimental designs
involve the researcher actively manipulating an independent
variable (in this case, the type of patient education program) and
measuring its effect on a dependent variable (readmission rates)
while controlling for other factors through randomization or
comparison groups.
Q2: When conducting a literature review for an evidence-based
practice project on fall prevention in elderly hospitalized
patients, a nurse identifies a well-designed randomized
controlled trial (RCT) from 2019 showing that bedside alarms
reduce falls by 35%. According to the hierarchy of evidence,
where does this study rank?
A. Level I – Systematic reviews of RCTs
B. Level II – Single well-designed RCT [CORRECT]
C. Level III – Controlled trials without randomization
D. Level IV – Cohort and case-control studies
Correct Answer: B
Rationale: The best answer is Level II because single, well-
designed randomized controlled trials occupy this position in the
evidence hierarchy, sitting just below systematic reviews of
multiple RCTs and above non-randomized controlled studies.
,3
Q3: A nursing student is reviewing a research article and notices
that participants were selected because they happened to be
admitted to the medical-surgical unit during the data collection
period and agreed to participate. What sampling method was
most likely used?
A. Simple random sampling
B. Stratified random sampling
C. Convenience sampling [CORRECT]
D. Purposive sampling
Correct Answer: C
Rationale: This matches the definition of convenience sampling,
where researchers select participants who are readily available
and accessible—in this case, patients who are already
hospitalized in the unit during the study period and willing to
participate.
Q4: In a study examining the relationship between nurse staffing
ratios and patient satisfaction scores, the researcher measures
staffing ratios (number of patients per nurse) and then collects
, 4
patient satisfaction survey results. In this study, which variable
is the independent variable?
A. Patient satisfaction scores
B. Nurse staffing ratios [CORRECT]
C. Hospital size
D. Length of patient stay
Correct Answer: B
Rationale: The independent variable is the one that is presumed
to influence or predict the outcome; here, nurse staffing ratios
are being examined as the potential factor that affects patient
satisfaction, making it the independent (predictor) variable.
Q5: A nurse researcher wants to understand the lived experience
of family caregivers who provide end-of-life care to loved ones
at home. The researcher conducts in-depth interviews and
analyzes the narratives for common themes. This is an example
of which research approach?
A. Quantitative experimental research
B. Quantitative descriptive research
