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BS Nursing Introduction To Biostatistics
nmdcat.online June 6, 2026

27. A medicinal study is designed to compare the effect of a new drug versus placebo on a continuous outcome. If a large standard deviation is observed in the preliminary data, what critical implication does this have for the required sample size?

A. A smaller sample size will be needed.
B. A larger sample size will be needed to detect a statistically significant difference.
✓
C. The standard deviation is irrelevant to sample size.
D. The study should be abandoned.

📖 Additional Information

  • A smaller sample size will be needed.
  • A larger sample size will be needed to detect a statistically significant difference.
  • The standard deviation is irrelevant to sample size.
  • The study should be abandoned.

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