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MCQs
11212 questions found
A.
Independent samples t-test.
✓
C.
Chi-square test of independence.
✓
B.
Correlation coefficient.
✓
D.
Chi-square statistic.
✓
A.
The drug is highly effective.
✓
B.
The finding is statistically significant, but the effect estimate is imprecise and less reliable, warranting caution.
✓
C.
The study had high precision.
✓
D.
The study is invalid.
✓
A.
Independent samples t-test.
✓
D.
Interquartile range.
✓
A.
Logistic regression.
✓
D.
Survival regression.
✓
A.
To immediately recommend approval.
✓
B.
To caution that a non-significant result might be due to low power (Type II error) rather than true ineffectiveness, necessitating further investigation.
✓
C.
To ignore the power and focus on the p-value.
✓
D.
To recommend disapproval regardless of findings.
✓
A.
Logistic regression.
✓
B.
Simple linear regression.
✓
D.
Multiple linear regression.
✓
D.
Interquartile range.
✓
B.
Independent samples t-test.
✓
A.
Independent samples t-test.
✓
C.
Mann-Whitney U test (or Wilcoxon rank-sum test).
✓
B.
Interquartile range.
✓
A.
High power is not necessary.
✓
B.
High statistical power (e.g., 80% or 90%) is critically needed.
✓
C.
The power should be as low as possible.
✓
D.
Power is only relevant for large differences.
✓
