Solution Manual for Statistics for Nursing
Research: A Workbook for
Evidence-Based Practice 4th Edition by
Susan K. Grove, All Chapters Updated
2025 || TEST BANK
🔹 STARTING NOW: QUESTIONS
1. Which type of research uses numerical data and statistical analysis?
A. Qualitative
B. Phenomenological
C. Quantitative
D. Ethnographic
Correct Answer: C
Rationale: Quantitative research relies on numbers and statistics.
2. Which level of measurement allows ranking but not equal intervals?
A. Nominal
B. Ordinal
C. Interval
D. Ratio
Correct Answer: B
Rationale: Ordinal data can be ordered, but distances between values are unequal.
,3. Which statistic describes the average of a data set?
A. Mode
B. Range
C. Mean
D. Variance
Correct Answer: C
Rationale: The mean is calculated by summing values and dividing by the number of
observations.
4. Which measure of central tendency is most affected by outliers?
A. Median
B. Mode
C. Mean
D. Range
Correct Answer: C
Rationale: Extreme values significantly affect the mean.
5. What does a p-value represent?
A. Probability the null hypothesis is true
B. Probability results occurred by chance
C. Size of the sample
D. Strength of correlation
Correct Answer: B
Rationale: A p-value estimates the likelihood that results occurred by chance.
6. A p-value of 0.03 is considered:
A. Not significant
B. Significant at α = 0.10
C. Significant at α = 0.05
D. A Type II error
, Correct Answer: C
Rationale: p < 0.05 indicates statistical significance.
7. Which statistic measures data spread around the mean?
A. Median
B. Mode
C. Variance
D. Frequency
Correct Answer: C
Rationale: Variance shows how far values deviate from the mean.
8. Standard deviation is best described as:
A. The square of variance
B. Average distance from the mean
C. Middle value
D. Highest score
Correct Answer: B
Rationale: Standard deviation reflects typical deviation from the mean.
9. Which graph best displays continuous data?
A. Pie chart
B. Bar graph
C. Histogram
D. Frequency table
Correct Answer: C
Rationale: Histograms show distribution of continuous data.
10. What is the null hypothesis (H₀)?
A. Researcher’s prediction
B. Assumption of no difference
Research: A Workbook for
Evidence-Based Practice 4th Edition by
Susan K. Grove, All Chapters Updated
2025 || TEST BANK
🔹 STARTING NOW: QUESTIONS
1. Which type of research uses numerical data and statistical analysis?
A. Qualitative
B. Phenomenological
C. Quantitative
D. Ethnographic
Correct Answer: C
Rationale: Quantitative research relies on numbers and statistics.
2. Which level of measurement allows ranking but not equal intervals?
A. Nominal
B. Ordinal
C. Interval
D. Ratio
Correct Answer: B
Rationale: Ordinal data can be ordered, but distances between values are unequal.
,3. Which statistic describes the average of a data set?
A. Mode
B. Range
C. Mean
D. Variance
Correct Answer: C
Rationale: The mean is calculated by summing values and dividing by the number of
observations.
4. Which measure of central tendency is most affected by outliers?
A. Median
B. Mode
C. Mean
D. Range
Correct Answer: C
Rationale: Extreme values significantly affect the mean.
5. What does a p-value represent?
A. Probability the null hypothesis is true
B. Probability results occurred by chance
C. Size of the sample
D. Strength of correlation
Correct Answer: B
Rationale: A p-value estimates the likelihood that results occurred by chance.
6. A p-value of 0.03 is considered:
A. Not significant
B. Significant at α = 0.10
C. Significant at α = 0.05
D. A Type II error
, Correct Answer: C
Rationale: p < 0.05 indicates statistical significance.
7. Which statistic measures data spread around the mean?
A. Median
B. Mode
C. Variance
D. Frequency
Correct Answer: C
Rationale: Variance shows how far values deviate from the mean.
8. Standard deviation is best described as:
A. The square of variance
B. Average distance from the mean
C. Middle value
D. Highest score
Correct Answer: B
Rationale: Standard deviation reflects typical deviation from the mean.
9. Which graph best displays continuous data?
A. Pie chart
B. Bar graph
C. Histogram
D. Frequency table
Correct Answer: C
Rationale: Histograms show distribution of continuous data.
10. What is the null hypothesis (H₀)?
A. Researcher’s prediction
B. Assumption of no difference
