MCQs

6530 questions found

Practice Questions

137. A critical situational research project involves collecting patient data, including sensitive health information. What urgency is involved in ensuring ethical biostatistical practice?

A. To share data with anyone who asks.
B. To urgently implement robust data anonymization, security protocols, and obtain appropriate ethical approvals to protect patient privacy and confidentiality.
C. To collect as much data as possible without consent.
D. To only focus on statistical analysis.
nmdcat.online BS Nursing
Jun 6, 2026
nmdcat.online BS Nursing
Jun 6, 2026

134. What technical term describes a measure of variability, calculated as the square root of the variance?

A. Range.
B. Interquartile range.
C. Standard deviation.
D. Median.
nmdcat.online BS Nursing
Jun 6, 2026

133. A critical situational public health official is considering implementing a widespread screening program for a rare disease. A biostatistician advises that even a highly sensitive and specific test may yield many false positives in this context. What urgency is involved?

A. To immediately implement the program.
B. To urgently explain that for rare diseases, a high positive predictive value (PPV) is difficult to achieve, leading to unnecessary anxiety and follow-up for many healthy individuals.
C. To ignore the concept of false positives.
D. To use a less sensitive test.
nmdcat.online BS Nursing
Jun 6, 2026

130. When a researcher fails to reject the null hypothesis when it is actually false, this is a:

A. Type I error.
B. Correct decision.
C. Type II error.
D. Alpha error.
nmdcat.online BS Nursing
Jun 6, 2026

129. What technical graphical display is useful for showing the relationship between two continuous variables?

A. Bar chart.
B. Pie chart.
C. Histogram.
D. Scatter plot.
nmdcat.online BS Nursing
Jun 6, 2026

128. A critical situational publication argues for a new therapy based on a single study with a statistically significant p-value of 0.04. What is the urgency for a biostatistician to advise caution?

A. To immediately adopt the new therapy.
B. To urgently advise that conclusions should not be based on a single study, especially close to the significance threshold, and that replication and meta-analysis are critically important.
C. To ignore all p-values.
D. To assume one study is enough.
nmdcat.online BS Nursing
Jun 6, 2026

125. The interquartile range technically measures the spread of the:

A. Entire dataset.
B. Middle 50% of the data.
C. Top 25% of the data.
D. Bottom 25% of the data.
nmdcat.online BS Nursing
Jun 6, 2026

122. When a researcher rejects the null hypothesis when it is actually true, this is a:

A. Type II error.
B. Correct decision.
C. Type I error.
D. Power.
nmdcat.online BS Nursing
Jun 6, 2026
nmdcat.online BS Nursing
Jun 6, 2026

120. A technical value that describes a specific characteristic of a population is called a:

A. Statistic.
B. Sample.
C. Parameter.
D. Hypothesis.
nmdcat.online BS Nursing
Jun 6, 2026

119. A critical situational review of a clinical trial protocol reveals that the primary outcome measure is difficult to assess consistently. What is the urgency for a biostatistician’s intervention?

A. To proceed with the trial as is.
B. To urgently recommend revising or replacing the outcome measure to ensure reliable and valid data collection, crucial for the integrity of the results.
C. To ignore measurement issues.
D. To tell the clinicians to be more careful.
nmdcat.online BS Nursing
Jun 6, 2026
nmdcat.online BS Nursing
Jun 6, 2026
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