NURS 5366 Module 5 Exam V1 | NURS
5366 Principles of Research in Nursing |
Actual Q&A with Rationale (NURS5366
Module 5 Exam) | The University of Texas
at Arlington
1. A researcher is measuring the weight of infants in kilograms. What level of measurement is
being utilized?
A. Nominal
B. Ordinal
C. Ratio
D. Interval
Answer: C
Rationale: The correct answer is Ratio. Ratio level measurement is characterized by
having equal intervals between points and an absolute zero point. In nursing research,
weight is a classic example of ratio data because zero kilograms represents the complete
absence of weight.
2. Which type of reliability is assessed when two different observers record the same
behavior using the same instrument?
A. Test-retest reliability
,B. Inter-rater reliability
C. Internal consistency
D. Parallel form reliability
Answer: B
Rationale: The correct answer is Inter-rater reliability. This type of reliability measures
the degree of agreement or consistency between different observers. It is essential in
clinical studies where subjective observations must be quantified objectively.
3. What occurs when a researcher rejects a null hypothesis that is actually true?
A. Type II Error
B. Type I Error
C. Power
D. Sampling bias
Answer: B
Rationale: The correct answer is Type I Error. This is also known as a false positive,
occurring when a researcher claims a treatment works when it does not. Setting a low
alpha level, such as 0.05, helps minimize the risk of making this specific error.
4. A Cronbach’s alpha of 0.85 indicates which of the following about a research instrument?
A. Low validity
B. Random error
, C. Poor stability
D. High internal consistency
Answer: D
Rationale: The correct answer is High internal consistency. Cronbach’s alpha measures
how well items on a scale correlate with each other. A value of 0.85 is generally considered
very good for research instruments used in nursing studies.
5. Which statistical test would be most appropriate to compare the mean scores of two
independent groups?
A. Chi-square
B. Pearson’s r
C. Independent t-test
D. ANOVA
Answer: C
Rationale: The correct answer is Independent t-test. This parametric test is specifically
designed to determine if there is a statistically significant difference between the means of
two unrelated groups. It requires that the dependent variable be measured at the interval
or ratio level.
5366 Principles of Research in Nursing |
Actual Q&A with Rationale (NURS5366
Module 5 Exam) | The University of Texas
at Arlington
1. A researcher is measuring the weight of infants in kilograms. What level of measurement is
being utilized?
A. Nominal
B. Ordinal
C. Ratio
D. Interval
Answer: C
Rationale: The correct answer is Ratio. Ratio level measurement is characterized by
having equal intervals between points and an absolute zero point. In nursing research,
weight is a classic example of ratio data because zero kilograms represents the complete
absence of weight.
2. Which type of reliability is assessed when two different observers record the same
behavior using the same instrument?
A. Test-retest reliability
,B. Inter-rater reliability
C. Internal consistency
D. Parallel form reliability
Answer: B
Rationale: The correct answer is Inter-rater reliability. This type of reliability measures
the degree of agreement or consistency between different observers. It is essential in
clinical studies where subjective observations must be quantified objectively.
3. What occurs when a researcher rejects a null hypothesis that is actually true?
A. Type II Error
B. Type I Error
C. Power
D. Sampling bias
Answer: B
Rationale: The correct answer is Type I Error. This is also known as a false positive,
occurring when a researcher claims a treatment works when it does not. Setting a low
alpha level, such as 0.05, helps minimize the risk of making this specific error.
4. A Cronbach’s alpha of 0.85 indicates which of the following about a research instrument?
A. Low validity
B. Random error
, C. Poor stability
D. High internal consistency
Answer: D
Rationale: The correct answer is High internal consistency. Cronbach’s alpha measures
how well items on a scale correlate with each other. A value of 0.85 is generally considered
very good for research instruments used in nursing studies.
5. Which statistical test would be most appropriate to compare the mean scores of two
independent groups?
A. Chi-square
B. Pearson’s r
C. Independent t-test
D. ANOVA
Answer: C
Rationale: The correct answer is Independent t-test. This parametric test is specifically
designed to determine if there is a statistically significant difference between the means of
two unrelated groups. It requires that the dependent variable be measured at the interval
or ratio level.
