NSG 455
Evidence Based Practice &
Statistics
Comprehensive Final
Review
Q&A
2024
,1. Multiple Choice: Which statistical test is most appropriate for
comparing the means of two independent groups?
A. Chi-square test
B. T-test
C. ANOVA
D. Regression analysis
Correct Answer: B. T-test
Rationale: The T-test is used to compare the means of two
independent groups when the dependent variable is continuous.
2. True/False: In evidence-based practice, a systematic review is
considered a higher level of evidence than a single randomized
controlled trial.
Answer: True
Rationale: Systematic reviews analyze a collection of studies,
which provides a more comprehensive overview of the available
evidence compared to a single study.
3. Fill-in-the-Blank: The _______ is a measure of variability that
describes an average deviation from the mean.
Correct Answer: Standard deviation
Rationale: The standard deviation is a statistical measure that
shows how much variation or dispersion exists from the average
(mean), indicating the reliability of the mean.
4. Multiple Choice: What does a p-value less than 0.05 typically
indicate in hypothesis testing?
A. The null hypothesis is true.
B. There is no significant effect.
C. The results are not statistically significant.
D. The results are statistically significant.
Correct Answer: D. The results are statistically significant.
, Rationale: A p-value less than 0.05 generally indicates that there
is less than a 5% probability that the observed results occurred by
chance, thus the results are statistically significant.
5. True/False: Confidence intervals provide a range of values
within which the true population parameter lies.
Answer: True
Rationale: Confidence intervals estimate the range of values
within which the true population parameter is expected to lie with
a certain level of confidence.
Multiple Choice:
What is the primary purpose of evidence-based practice in
healthcare?
A) To rely solely on clinical experience
B) To integrate patient preferences with best available
evidence
C) To disregard research findings
D) To follow traditional practices without questioning
Correct Answer: B) To integrate patient preferences with best
available evidence
Rationale: Evidence-based practice aims to combine the best
available research evidence with clinical expertise and patient
values to make informed healthcare decisions.
Fill-in-the-Blank:
In statistical analysis, the p-value is a measure that helps
determine the __ of the results.
Correct Answer: significance
Evidence Based Practice &
Statistics
Comprehensive Final
Review
Q&A
2024
,1. Multiple Choice: Which statistical test is most appropriate for
comparing the means of two independent groups?
A. Chi-square test
B. T-test
C. ANOVA
D. Regression analysis
Correct Answer: B. T-test
Rationale: The T-test is used to compare the means of two
independent groups when the dependent variable is continuous.
2. True/False: In evidence-based practice, a systematic review is
considered a higher level of evidence than a single randomized
controlled trial.
Answer: True
Rationale: Systematic reviews analyze a collection of studies,
which provides a more comprehensive overview of the available
evidence compared to a single study.
3. Fill-in-the-Blank: The _______ is a measure of variability that
describes an average deviation from the mean.
Correct Answer: Standard deviation
Rationale: The standard deviation is a statistical measure that
shows how much variation or dispersion exists from the average
(mean), indicating the reliability of the mean.
4. Multiple Choice: What does a p-value less than 0.05 typically
indicate in hypothesis testing?
A. The null hypothesis is true.
B. There is no significant effect.
C. The results are not statistically significant.
D. The results are statistically significant.
Correct Answer: D. The results are statistically significant.
, Rationale: A p-value less than 0.05 generally indicates that there
is less than a 5% probability that the observed results occurred by
chance, thus the results are statistically significant.
5. True/False: Confidence intervals provide a range of values
within which the true population parameter lies.
Answer: True
Rationale: Confidence intervals estimate the range of values
within which the true population parameter is expected to lie with
a certain level of confidence.
Multiple Choice:
What is the primary purpose of evidence-based practice in
healthcare?
A) To rely solely on clinical experience
B) To integrate patient preferences with best available
evidence
C) To disregard research findings
D) To follow traditional practices without questioning
Correct Answer: B) To integrate patient preferences with best
available evidence
Rationale: Evidence-based practice aims to combine the best
available research evidence with clinical expertise and patient
values to make informed healthcare decisions.
Fill-in-the-Blank:
In statistical analysis, the p-value is a measure that helps
determine the __ of the results.
Correct Answer: significance
