ESTUDYR
WGU D514 OA WGU D514 ACTUAL 2026 EXAM CURRENTLY TESTING
COMPLETE EXAM QUESTIONS WITH DETAILED VERIFIED ANSWER
1. A quality improvement team evaluates quarterly medication error rates over a two-year
period after implementing Six Sigma interventions. The team expects a steady reduction in
errors each quarter. Which research design is most appropriate?
A. Cross-sectional
B. Pretest–posttest
C. Time-series
D. Randomized controlled trial
Correct Answer: C — Time-series
Rationale:
Time-series analysis evaluates changes in outcomes across multiple time points, making it ideal
for assessing trends following quality interventions such as Six Sigma.
2. A researcher examines emergency department wait times and patient race using claims
data collected during a single calendar year. Which study design is being used?
A. Longitudinal
B. Pretest–posttest
C. Randomized trial
D. Cross-sectional
Correct Answer: D — Cross-sectional
Rationale:
Cross-sectional studies analyze variables at one point in time, identifying associations but not
causation.
3. A policy analyst evaluates hospital efficiency annually for 10 years after implementation
of the Prospective Payment System (PPS). Which method is most appropriate?
A. Cross-sectional
B. Randomized controlled trial
C. Time-series analysis
D. Case study
Correct Answer: C — Time-series analysis
,ESTUDYR
Rationale:
Time-series is appropriate when outcomes are measured repeatedly over long periods to assess
policy impact.
4. Which of the following is an example of quantitative data analysis?
A. Describing patient experiences in interviews
B. Coding open-ended survey comments
C. Reporting the distribution of outcome results
D. Thematic analysis of focus groups
Correct Answer: C
Rationale:
Quantitative analysis focuses on numerical data, including frequencies, means, and
distributions.
5. Which is a defining characteristic of qualitative research?
A. Large sample sizes
B. Generalizable results
C. Causal inference
D. Subjectivity in data collection
Correct Answer: D
Rationale:
Qualitative research emphasizes perspectives, meanings, and experiences, introducing
subjectivity.
6. Patients with diabetes participate in virtual nurse visits, and blood glucose levels are
evaluated after six months. Which design was used?
A. Cross-sectional
B. Time-series
C. Pretest–posttest
D. Case-control
Correct Answer: C
, ESTUDYR
Rationale:
Pretest–posttest designs measure outcomes before and after an intervention.
7. A researcher combines results from multiple published studies to evaluate care
coordination tools. Which method is used?
A. Literature review
B. Cohort study
C. Case study
D. Meta-analysis
Correct Answer: D
Rationale:
Meta-analysis statistically combines findings from multiple studies to assess overall
effectiveness.
8. A five-year immunization initiative is evaluated by comparing results before and after
implementation. Which design applies?
A. Cohort study
B. Case study
C. Longitudinal
D. Pre/post study
Correct Answer: D
Rationale:
Pre/post studies assess outcomes before and after a defined intervention.
9. Which statistical technique estimates readmission and mortality rates while controlling
for multiple variables?
A. t-test
B. ANOVA
C. Correlation
D. Regression analysis
Correct Answer: D
WGU D514 OA WGU D514 ACTUAL 2026 EXAM CURRENTLY TESTING
COMPLETE EXAM QUESTIONS WITH DETAILED VERIFIED ANSWER
1. A quality improvement team evaluates quarterly medication error rates over a two-year
period after implementing Six Sigma interventions. The team expects a steady reduction in
errors each quarter. Which research design is most appropriate?
A. Cross-sectional
B. Pretest–posttest
C. Time-series
D. Randomized controlled trial
Correct Answer: C — Time-series
Rationale:
Time-series analysis evaluates changes in outcomes across multiple time points, making it ideal
for assessing trends following quality interventions such as Six Sigma.
2. A researcher examines emergency department wait times and patient race using claims
data collected during a single calendar year. Which study design is being used?
A. Longitudinal
B. Pretest–posttest
C. Randomized trial
D. Cross-sectional
Correct Answer: D — Cross-sectional
Rationale:
Cross-sectional studies analyze variables at one point in time, identifying associations but not
causation.
3. A policy analyst evaluates hospital efficiency annually for 10 years after implementation
of the Prospective Payment System (PPS). Which method is most appropriate?
A. Cross-sectional
B. Randomized controlled trial
C. Time-series analysis
D. Case study
Correct Answer: C — Time-series analysis
,ESTUDYR
Rationale:
Time-series is appropriate when outcomes are measured repeatedly over long periods to assess
policy impact.
4. Which of the following is an example of quantitative data analysis?
A. Describing patient experiences in interviews
B. Coding open-ended survey comments
C. Reporting the distribution of outcome results
D. Thematic analysis of focus groups
Correct Answer: C
Rationale:
Quantitative analysis focuses on numerical data, including frequencies, means, and
distributions.
5. Which is a defining characteristic of qualitative research?
A. Large sample sizes
B. Generalizable results
C. Causal inference
D. Subjectivity in data collection
Correct Answer: D
Rationale:
Qualitative research emphasizes perspectives, meanings, and experiences, introducing
subjectivity.
6. Patients with diabetes participate in virtual nurse visits, and blood glucose levels are
evaluated after six months. Which design was used?
A. Cross-sectional
B. Time-series
C. Pretest–posttest
D. Case-control
Correct Answer: C
, ESTUDYR
Rationale:
Pretest–posttest designs measure outcomes before and after an intervention.
7. A researcher combines results from multiple published studies to evaluate care
coordination tools. Which method is used?
A. Literature review
B. Cohort study
C. Case study
D. Meta-analysis
Correct Answer: D
Rationale:
Meta-analysis statistically combines findings from multiple studies to assess overall
effectiveness.
8. A five-year immunization initiative is evaluated by comparing results before and after
implementation. Which design applies?
A. Cohort study
B. Case study
C. Longitudinal
D. Pre/post study
Correct Answer: D
Rationale:
Pre/post studies assess outcomes before and after a defined intervention.
9. Which statistical technique estimates readmission and mortality rates while controlling
for multiple variables?
A. t-test
B. ANOVA
C. Correlation
D. Regression analysis
Correct Answer: D
