NURS 5366 Module 6 Exam V3 | NURS
5366 Principles of Research in Nursing |
Actual Q&A with Rationale (NURS5366
Module 6 Exam) | The University of Texas
at Arlington
1. Which level of measurement is characterized by data that can be categorized and ranked,
but the distance between values is not equal?
A. Nominal
B. Ordinal
C. Interval
D. Ratio
Answer: B
Rationale: Ordinal data allows for the sequencing of variables in a specific order such as
pain scales or socio-economic status. While it provides more information than nominal
data, it lacks consistent intervals between the ranks. This makes it distinct from interval or
ratio data where the mathematical difference between points is standardized.
2. A researcher fails to reject the null hypothesis when it is actually false. What type of error
has occurred?
A. Type I Error
,B. Standard Error
C. Type II Error
D. Measurement Error
Answer: C
Rationale: A Type II Error occurs when a study fails to detect a difference or relationship
that truly exists in the population. This is often associated with an inadequate sample size
or low statistical power. Researchers aim to minimize this error to ensure that effective
interventions are not overlooked.
3. What is the primary function of the p-value in nursing research reports?
A. To indicate the probability that the results occurred by chance
B. To determine the strength of the effect size
C. To measure the clinical importance of the findings
D. To prove the hypothesis is 100% correct
Answer: A
Rationale: The p-value is used To indicate the probability that the results occurred by
chance rather than as a result of the intervention. Generally, a p-value less than 0.05 is
considered statistically significant, meaning there is a low probability the null hypothesis is
true. It does not, however, measure the clinical magnitude or practical application of the
results.
, 4. Which measure of central tendency is most affected by extreme scores (outliers) in a data
set?
A. Mean
B. Mode
C. Median
D. Standard Deviation
Answer: A
Rationale: The Mean is calculated by summing all values and dividing by the total number
of entries, making it highly sensitive to outliers. In skewed distributions, the mean is pulled
toward the tail of the data. For this reason, the median is often preferred when reporting
central tendency for non-normal distributions.
5. A nursing study uses a Cronbach’s alpha coefficient of 0.85 to describe a new survey tool.
What does this value represent?
A. External validity
B. Inter-rater reliability
C. Internal consistency reliability
D. Content validity
Answer: C
5366 Principles of Research in Nursing |
Actual Q&A with Rationale (NURS5366
Module 6 Exam) | The University of Texas
at Arlington
1. Which level of measurement is characterized by data that can be categorized and ranked,
but the distance between values is not equal?
A. Nominal
B. Ordinal
C. Interval
D. Ratio
Answer: B
Rationale: Ordinal data allows for the sequencing of variables in a specific order such as
pain scales or socio-economic status. While it provides more information than nominal
data, it lacks consistent intervals between the ranks. This makes it distinct from interval or
ratio data where the mathematical difference between points is standardized.
2. A researcher fails to reject the null hypothesis when it is actually false. What type of error
has occurred?
A. Type I Error
,B. Standard Error
C. Type II Error
D. Measurement Error
Answer: C
Rationale: A Type II Error occurs when a study fails to detect a difference or relationship
that truly exists in the population. This is often associated with an inadequate sample size
or low statistical power. Researchers aim to minimize this error to ensure that effective
interventions are not overlooked.
3. What is the primary function of the p-value in nursing research reports?
A. To indicate the probability that the results occurred by chance
B. To determine the strength of the effect size
C. To measure the clinical importance of the findings
D. To prove the hypothesis is 100% correct
Answer: A
Rationale: The p-value is used To indicate the probability that the results occurred by
chance rather than as a result of the intervention. Generally, a p-value less than 0.05 is
considered statistically significant, meaning there is a low probability the null hypothesis is
true. It does not, however, measure the clinical magnitude or practical application of the
results.
, 4. Which measure of central tendency is most affected by extreme scores (outliers) in a data
set?
A. Mean
B. Mode
C. Median
D. Standard Deviation
Answer: A
Rationale: The Mean is calculated by summing all values and dividing by the total number
of entries, making it highly sensitive to outliers. In skewed distributions, the mean is pulled
toward the tail of the data. For this reason, the median is often preferred when reporting
central tendency for non-normal distributions.
5. A nursing study uses a Cronbach’s alpha coefficient of 0.85 to describe a new survey tool.
What does this value represent?
A. External validity
B. Inter-rater reliability
C. Internal consistency reliability
D. Content validity
Answer: C
