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1. Which of the following statistical tests would
be most appropriate to compare the mean blood
pressure levels of patients before and after a new
medication intervention?
A) Independent samples t-test
B) Paired samples t-test
C) Chi-square test
D) Analysis of Variance (ANOVA)
Answer: B) Paired samples t-test
Rationale: A paired samples t-test is used when
comparing the means of two related groups, such
as before and after measurements within the same
group.
2. In a study examining the relationship between
smoking status and lung cancer incidence, which
statistical analysis would be most appropriate?
A) Pearson correlation
B) Linear regression
C) Chi-square test
D) Independent samples t-test
Answer: C) Chi-square test
Rationale: A chi-square test is used to assess the
association between two categorical variables,
such as smoking status and lung cancer incidence.
3. A researcher is interested in determining if there
is a difference in pain scores among patient
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