Practice Questions

156. A medicinal study aims to determine if a new drug is equivalent to an existing drug. What technical type of hypothesis test is typically used?

A. Superiority test.

B. Non-inferiority test.

C. Equivalence test. ✓

D. Association test.

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Jun 6, 2026

155. In a clinical study, researchers are measuring patient temperature (in Celsius). What technical type of data is temperature?

A. Nominal.

B. Ordinal.

C. Interval. ✓

D. Ratio.

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Jun 6, 2026

154. What technical term describes a graph that uses rectangles to represent the frequency of data in different categories?

A. Histogram.

B. Scatter plot.

C. Bar chart. ✓

D. Line graph.

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Jun 6, 2026

153. A critical situational research project involves using pre-existing administrative data for analysis. The biostatistician notes that the data collection methods were not standardized. What is the urgency for concern?

A. To use the data without any changes.

B. To urgently highlight potential for information bias due to inconsistent data collection and to develop strategies to assess and mitigate this bias. ✓

C. To assume data are perfect.

D. To only analyze a subset of the data.

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Jun 6, 2026

152. A medicinal study is testing a new drug. The alternative hypothesis states that the new drug increases the mean blood pressure. What technical type of hypothesis test is this?

A. Two-tailed test.

B. One-tailed (right-tailed) test. ✓

C. One-tailed (left-tailed) test.

D. Non-directional test.

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Jun 6, 2026

151. A clinical trial involves measuring patients’ cholesterol levels before and after receiving a new dietary supplement. Which technical statistical test is most appropriate for comparing the ‘before’ and ‘after’ mean cholesterol levels in the same group of patients?

A. Independent samples t-test.

B. Paired t-test. ✓

C. Chi-square test.

D. One-way ANOVA.

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Jun 6, 2026

150. In biostatistics, technical variables that can only take on a finite number of values or a countably infinite number of values are called:

A. Continuous variables.

B. Ordinal variables.

C. Discrete variables. ✓

D. Nominal variables.

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Jun 6, 2026

149. A critical situational decision needs to be made about public health resource allocation based on a study that used a convenience sample rather than a random sample. What is the urgency for a biostatistician’s caution?

A. To immediately allocate resources based on the study.

B. To urgently explain that convenience samples may not be representative of the population, leading to biased estimates and potentially ineffective interventions. ✓

C. To ignore the sampling method.

D. To assume all samples are representative.

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nmdcat.online BS Nursing

Jun 6, 2026