NURS 5366 Module 4 Exam V3 | NURS
5366 Principles of Research in Nursing |
Actual Q&A with Rationale (NURS5366
Module 4 Exam) | The University of Texas
at Arlington
1. A researcher is conducting a study where they reject the null hypothesis when it is actually
true. What type of error has been committed?
A. Sampling Error
B. Type II Error
C. Type I Error
D. Measurement Error
Answer: C
Rationale: A Type I Error occurs when a researcher concludes that a significant difference
exists when in reality there is none. This is often associated with setting an alpha level that
is too high, leading to the false rejection of a true null hypothesis. In clinical research, this is
considered a ‘false positive’ result that can lead to ineffective treatments being adopted.
2. Which statistical test is most appropriate for comparing the means of two independent
groups on a continuous dependent variable?
A. Chi-square test
,B. Analysis of Variance (ANOVA)
C. Pearson correlation
D. Independent samples t-test
Answer: D
Rationale: The Independent samples t-test is designed to evaluate the difference between
the means of two unrelated groups. It assumes that the data is normally distributed and the
dependent variable is measured at the interval or ratio level. This test is a staple in nursing
research for comparing outcomes between a control group and an experimental group.
3. In qualitative research, which term describes the strategy of using multiple data sources or
methods to enhance the study’s credibility?
A. Bracketing
B. Triangulation
C. Saturation
D. Member checking
Answer: B
Rationale: Triangulation involves using different types of data or multiple researchers to
cross-verify findings within a qualitative study. This process helps to reduce bias and
ensures a more comprehensive understanding of the phenomenon under investigation. By
, validating evidence from multiple perspectives, the researcher increases the overall
trustworthiness of the results.
4. A Cronbach’s alpha coefficient of 0.85 indicates what regarding a measurement scale?
A. Low validity
B. High validity
C. Low internal consistency reliability
D. High internal consistency reliability
Answer: D
Rationale: A Cronbach’s alpha score of 0.85 signifies High internal consistency reliability,
meaning the items on the scale are highly correlated and measure the same construct. In
nursing research, a coefficient above 0.70 is generally considered acceptable, while 0.80 or
higher is preferred for established tools. This ensures that the instrument provides stable
and consistent results across different administrations.
5. Which level of measurement is characterized by data that can be ranked but lacks a
defined numerical distance between ranks?
A. Ordinal
B. Nominal
C. Interval
D. Ratio
5366 Principles of Research in Nursing |
Actual Q&A with Rationale (NURS5366
Module 4 Exam) | The University of Texas
at Arlington
1. A researcher is conducting a study where they reject the null hypothesis when it is actually
true. What type of error has been committed?
A. Sampling Error
B. Type II Error
C. Type I Error
D. Measurement Error
Answer: C
Rationale: A Type I Error occurs when a researcher concludes that a significant difference
exists when in reality there is none. This is often associated with setting an alpha level that
is too high, leading to the false rejection of a true null hypothesis. In clinical research, this is
considered a ‘false positive’ result that can lead to ineffective treatments being adopted.
2. Which statistical test is most appropriate for comparing the means of two independent
groups on a continuous dependent variable?
A. Chi-square test
,B. Analysis of Variance (ANOVA)
C. Pearson correlation
D. Independent samples t-test
Answer: D
Rationale: The Independent samples t-test is designed to evaluate the difference between
the means of two unrelated groups. It assumes that the data is normally distributed and the
dependent variable is measured at the interval or ratio level. This test is a staple in nursing
research for comparing outcomes between a control group and an experimental group.
3. In qualitative research, which term describes the strategy of using multiple data sources or
methods to enhance the study’s credibility?
A. Bracketing
B. Triangulation
C. Saturation
D. Member checking
Answer: B
Rationale: Triangulation involves using different types of data or multiple researchers to
cross-verify findings within a qualitative study. This process helps to reduce bias and
ensures a more comprehensive understanding of the phenomenon under investigation. By
, validating evidence from multiple perspectives, the researcher increases the overall
trustworthiness of the results.
4. A Cronbach’s alpha coefficient of 0.85 indicates what regarding a measurement scale?
A. Low validity
B. High validity
C. Low internal consistency reliability
D. High internal consistency reliability
Answer: D
Rationale: A Cronbach’s alpha score of 0.85 signifies High internal consistency reliability,
meaning the items on the scale are highly correlated and measure the same construct. In
nursing research, a coefficient above 0.70 is generally considered acceptable, while 0.80 or
higher is preferred for established tools. This ensures that the instrument provides stable
and consistent results across different administrations.
5. Which level of measurement is characterized by data that can be ranked but lacks a
defined numerical distance between ranks?
A. Ordinal
B. Nominal
C. Interval
D. Ratio
