NURS 5366 Module 6 Exam V1 | NURS
5366 Principles of Research in Nursing |
Actual Q&A with Rationale (NURS5366
Module 6 Exam) | The University of Texas
at Arlington
1. A researcher is studying the marital status of participants in a clinical trial. Which level of
measurement is represented by the categories married, single, divorced, and widowed?
A. Interval
B. Nominal
C. Ordinal
D. Ratio
Answer: B
Rationale: The correct answer is Nominal because marital status consists of categories
that are mutually exclusive but have no inherent mathematical order. In nursing research,
this level of measurement is used to label variables without providing quantitative value.
Understanding measurement levels is crucial for selecting appropriate statistical tests in
NURS 5366.
2. When assessing the internal consistency of a new survey tool designed to measure patient
anxiety, which statistical coefficient should the researcher report?
A. Cronbach’s alpha
,B. Spearman’s rho
C. Pearson’s r
D. Chi-square
Answer: A
Rationale: The researcher should report Cronbach’s alpha to demonstrate how well the
items on the tool work together to measure a single construct. A value above 0.70 is
typically considered acceptable for a new instrument in nursing studies. This measure is
essential for establishing the reliability of data collection tools.
3. A nurse researcher conducts a study and sets the alpha level at 0.05. If the resulting p-value
is 0.02, what is the correct interpretation of the findings?
A. The results are not statistically significant.
B. A Type II error has occurred.
C. There is a 2% chance the null hypothesis is true.
D. The null hypothesis is rejected.
Answer: D
Rationale: Since the p-value of 0.02 is less than the alpha of 0.05, The null hypothesis is
rejected, indicating statistical significance. This suggests that the observed effect is unlikely
to have occurred by chance alone. Interpreting p-values accurately is a fundamental skill
tested in the UTA nursing research curriculum.
, 4. Which measure of central tendency is most appropriate for a skewed distribution of annual
household incomes among participants?
A. Mean
B. Median
C. Mode
D. Standard Deviation
Answer: B
Rationale: The Median is the preferred measure of central tendency for skewed data
because it is not influenced by extreme outliers. In contrast, the mean would be pulled
toward the tail of the distribution, providing a less representative ‘center.’ Nursing
researchers must choose the correct descriptive statistic to accurately characterize their
sample population.
5. In a study comparing the mean blood pressure of two independent groups of patients,
which statistical test is most appropriate?
A. Independent t-test
B. ANOVA
C. Paired t-test
D. Pearson correlation
Answer: A
5366 Principles of Research in Nursing |
Actual Q&A with Rationale (NURS5366
Module 6 Exam) | The University of Texas
at Arlington
1. A researcher is studying the marital status of participants in a clinical trial. Which level of
measurement is represented by the categories married, single, divorced, and widowed?
A. Interval
B. Nominal
C. Ordinal
D. Ratio
Answer: B
Rationale: The correct answer is Nominal because marital status consists of categories
that are mutually exclusive but have no inherent mathematical order. In nursing research,
this level of measurement is used to label variables without providing quantitative value.
Understanding measurement levels is crucial for selecting appropriate statistical tests in
NURS 5366.
2. When assessing the internal consistency of a new survey tool designed to measure patient
anxiety, which statistical coefficient should the researcher report?
A. Cronbach’s alpha
,B. Spearman’s rho
C. Pearson’s r
D. Chi-square
Answer: A
Rationale: The researcher should report Cronbach’s alpha to demonstrate how well the
items on the tool work together to measure a single construct. A value above 0.70 is
typically considered acceptable for a new instrument in nursing studies. This measure is
essential for establishing the reliability of data collection tools.
3. A nurse researcher conducts a study and sets the alpha level at 0.05. If the resulting p-value
is 0.02, what is the correct interpretation of the findings?
A. The results are not statistically significant.
B. A Type II error has occurred.
C. There is a 2% chance the null hypothesis is true.
D. The null hypothesis is rejected.
Answer: D
Rationale: Since the p-value of 0.02 is less than the alpha of 0.05, The null hypothesis is
rejected, indicating statistical significance. This suggests that the observed effect is unlikely
to have occurred by chance alone. Interpreting p-values accurately is a fundamental skill
tested in the UTA nursing research curriculum.
, 4. Which measure of central tendency is most appropriate for a skewed distribution of annual
household incomes among participants?
A. Mean
B. Median
C. Mode
D. Standard Deviation
Answer: B
Rationale: The Median is the preferred measure of central tendency for skewed data
because it is not influenced by extreme outliers. In contrast, the mean would be pulled
toward the tail of the distribution, providing a less representative ‘center.’ Nursing
researchers must choose the correct descriptive statistic to accurately characterize their
sample population.
5. In a study comparing the mean blood pressure of two independent groups of patients,
which statistical test is most appropriate?
A. Independent t-test
B. ANOVA
C. Paired t-test
D. Pearson correlation
Answer: A
