NURS 5366 Module 5 Exam V3 | 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 utilizing a sampling method where every 10th member of the population
list is selected. Which sampling technique is being applied?
A. Simple random sampling
B. Cluster sampling
C. Systematic sampling
D. Stratified random sampling
Answer: C
Rationale: Systematic sampling involves selecting subjects at fixed intervals, known as the
sampling interval, from a list. This method is considered a probability sampling technique if
the starting point is chosen at random. It provides a more organized way of selecting a
sample compared to simple random sampling while maintaining representativeness.
2. Which coefficient value for Cronbach’s alpha indicates a highly reliable instrument for
clinical research?
A. 0.85
,B. 0.45
C. 0.60
D. 0.10
Answer: A
Rationale: A Cronbach’s alpha of 0.80 or higher is generally accepted as reflecting strong
internal consistency in nursing research. This indicates that the items on the scale are
measuring the same underlying construct consistently. Lower values suggest that the
instrument may lack the precision required for rigorous scientific inquiry.
3. In a study assessing pain levels using a scale of 0 to 10, what level of measurement is being
utilized?
A. Ordinal
B. Nominal
C. Ratio
D. Interval
Answer: A
Rationale: Ordinal scales represent data that can be ranked or ordered, but the
mathematical distance between points is not necessarily equal. Pain scales are classic
examples of ordinal data because while 8 is higher than 4, it does not mathematically
, double the sensation of pain. This level of measurement is common in nursing assessments
for subjective experiences.
4. What is the primary purpose of conducting a power analysis before starting a quantitative
study?
A. To identify the theoretical framework
B. To determine the required sample size
C. To select the appropriate data collection tool
D. To evaluate the validity of the findings
Answer: B
Rationale: Power analysis is a statistical method used to calculate the minimum number of
participants needed to detect a significant effect. It helps researchers avoid Type II errors,
where a true effect is missed due to an inadequate sample size. Performing this analysis
ensures the study is sufficiently robust to yield meaningful conclusions.
5. A researcher recruits participants who are easily accessible, such as students in a
classroom. This is an example of:
A. Quota sampling
B. Convenience sampling
C. Purposive sampling
D. Snowball sampling
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 utilizing a sampling method where every 10th member of the population
list is selected. Which sampling technique is being applied?
A. Simple random sampling
B. Cluster sampling
C. Systematic sampling
D. Stratified random sampling
Answer: C
Rationale: Systematic sampling involves selecting subjects at fixed intervals, known as the
sampling interval, from a list. This method is considered a probability sampling technique if
the starting point is chosen at random. It provides a more organized way of selecting a
sample compared to simple random sampling while maintaining representativeness.
2. Which coefficient value for Cronbach’s alpha indicates a highly reliable instrument for
clinical research?
A. 0.85
,B. 0.45
C. 0.60
D. 0.10
Answer: A
Rationale: A Cronbach’s alpha of 0.80 or higher is generally accepted as reflecting strong
internal consistency in nursing research. This indicates that the items on the scale are
measuring the same underlying construct consistently. Lower values suggest that the
instrument may lack the precision required for rigorous scientific inquiry.
3. In a study assessing pain levels using a scale of 0 to 10, what level of measurement is being
utilized?
A. Ordinal
B. Nominal
C. Ratio
D. Interval
Answer: A
Rationale: Ordinal scales represent data that can be ranked or ordered, but the
mathematical distance between points is not necessarily equal. Pain scales are classic
examples of ordinal data because while 8 is higher than 4, it does not mathematically
, double the sensation of pain. This level of measurement is common in nursing assessments
for subjective experiences.
4. What is the primary purpose of conducting a power analysis before starting a quantitative
study?
A. To identify the theoretical framework
B. To determine the required sample size
C. To select the appropriate data collection tool
D. To evaluate the validity of the findings
Answer: B
Rationale: Power analysis is a statistical method used to calculate the minimum number of
participants needed to detect a significant effect. It helps researchers avoid Type II errors,
where a true effect is missed due to an inadequate sample size. Performing this analysis
ensures the study is sufficiently robust to yield meaningful conclusions.
5. A researcher recruits participants who are easily accessible, such as students in a
classroom. This is an example of:
A. Quota sampling
B. Convenience sampling
C. Purposive sampling
D. Snowball sampling
