NUR 505 Exam 1 QUESTIONS AND
CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026
Q&A
1.
Question:
Which research design provides the highest level of evidence?
A. Case study
B. Randomized controlled trial
C. Cross-sectional study
D. Qualitative study
Answer: B. Randomized controlled trial
Rationale: RCTs minimize bias through randomization and control groups, making them the
gold standard.
2.
Question:
What is the purpose of evidence-based practice (EBP)?
A. Reduce workload
B. Integrate best research with clinical expertise and patient values
C. Replace clinical judgment
D. Eliminate patient input
Answer: B. Integrate best research with clinical expertise and patient values
Rationale: EBP combines research evidence, clinician expertise, and patient preferences.
3.
,Question:
What does the “P” in PICOT stand for?
A. Problem/Population
B. Procedure
C. Plan
D. Practice
Answer: A. Problem/Population
Rationale: PICOT begins with identifying the patient population or problem.
4.
Question:
Which type of study explores lived experiences?
A. Quantitative
B. Experimental
C. Phenomenological
D. Cohort
Answer: C. Phenomenological
Rationale: Phenomenological studies focus on individuals’ lived experiences.
5.
Question:
What is a dependent variable?
A. Variable manipulated
B. Outcome measured
C. Control variable
D. Independent factor
Answer: B. Outcome measured
Rationale: The dependent variable is the result influenced by the independent variable.
6.
,Question:
What is the primary goal of nursing research?
A. Increase hospital revenue
B. Improve patient outcomes
C. Reduce staffing
D. Replace physicians
Answer: B. Improve patient outcomes
Rationale: Nursing research focuses on enhancing care quality and outcomes.
7.
Question:
Which sampling method gives every individual an equal chance?
A. Convenience sampling
B. Random sampling
C. Purposive sampling
D. Snowball sampling
Answer: B. Random sampling
Rationale: Random sampling reduces selection bias.
8.
Question:
What is validity in research?
A. Consistency
B. Accuracy of measurement
C. Sample size
D. Data collection
Answer: B. Accuracy of measurement
Rationale: Validity ensures the tool measures what it is intended to measure.
9.
, Question:
What is reliability?
A. Accuracy
B. Consistency of results
C. Sample size
D. Hypothesis
Answer: B. Consistency of results
Rationale: Reliability refers to repeated consistent results.
10.
Question:
What type of variable is manipulated in a study?
A. Dependent
B. Independent
C. Control
D. Outcome
Answer: B. Independent
Rationale: The independent variable is the one changed to observe effects.
11.
Question:
What is informed consent?
A. Verbal agreement only
B. Permission with full understanding of risks and benefits
C. Written policy
D. Research approval
Answer: B. Permission with full understanding of risks and benefits
Rationale: Participants must understand and voluntarily agree.
12.
CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026
Q&A
1.
Question:
Which research design provides the highest level of evidence?
A. Case study
B. Randomized controlled trial
C. Cross-sectional study
D. Qualitative study
Answer: B. Randomized controlled trial
Rationale: RCTs minimize bias through randomization and control groups, making them the
gold standard.
2.
Question:
What is the purpose of evidence-based practice (EBP)?
A. Reduce workload
B. Integrate best research with clinical expertise and patient values
C. Replace clinical judgment
D. Eliminate patient input
Answer: B. Integrate best research with clinical expertise and patient values
Rationale: EBP combines research evidence, clinician expertise, and patient preferences.
3.
,Question:
What does the “P” in PICOT stand for?
A. Problem/Population
B. Procedure
C. Plan
D. Practice
Answer: A. Problem/Population
Rationale: PICOT begins with identifying the patient population or problem.
4.
Question:
Which type of study explores lived experiences?
A. Quantitative
B. Experimental
C. Phenomenological
D. Cohort
Answer: C. Phenomenological
Rationale: Phenomenological studies focus on individuals’ lived experiences.
5.
Question:
What is a dependent variable?
A. Variable manipulated
B. Outcome measured
C. Control variable
D. Independent factor
Answer: B. Outcome measured
Rationale: The dependent variable is the result influenced by the independent variable.
6.
,Question:
What is the primary goal of nursing research?
A. Increase hospital revenue
B. Improve patient outcomes
C. Reduce staffing
D. Replace physicians
Answer: B. Improve patient outcomes
Rationale: Nursing research focuses on enhancing care quality and outcomes.
7.
Question:
Which sampling method gives every individual an equal chance?
A. Convenience sampling
B. Random sampling
C. Purposive sampling
D. Snowball sampling
Answer: B. Random sampling
Rationale: Random sampling reduces selection bias.
8.
Question:
What is validity in research?
A. Consistency
B. Accuracy of measurement
C. Sample size
D. Data collection
Answer: B. Accuracy of measurement
Rationale: Validity ensures the tool measures what it is intended to measure.
9.
, Question:
What is reliability?
A. Accuracy
B. Consistency of results
C. Sample size
D. Hypothesis
Answer: B. Consistency of results
Rationale: Reliability refers to repeated consistent results.
10.
Question:
What type of variable is manipulated in a study?
A. Dependent
B. Independent
C. Control
D. Outcome
Answer: B. Independent
Rationale: The independent variable is the one changed to observe effects.
11.
Question:
What is informed consent?
A. Verbal agreement only
B. Permission with full understanding of risks and benefits
C. Written policy
D. Research approval
Answer: B. Permission with full understanding of risks and benefits
Rationale: Participants must understand and voluntarily agree.
12.
