Biostatistics & Research · single question
What p-value threshold indicates statistical significance?
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Correct answer: B. p < 0.05
✓ B) p < 0.05 is the conventional threshold for statistical significance.
The p-value represents the probability that the observed result occurred by chance, assuming the null hypothesis is true. p < 0.05 means ≤5% probability of the result being due to chance. p < 0.05 = statistically significant. However, statistical significance ≠ clinical significance. A narrower confidence interval and a clinically meaningful effect size are also important. p < 0.01 and p < 0.001 indicate stronger evidence but the threshold is 0.05.
The p-value represents the probability that the observed result occurred by chance, assuming the null hypothesis is true. p < 0.05 means ≤5% probability of the result being due to chance. p < 0.05 = statistically significant. However, statistical significance ≠ clinical significance. A narrower confidence interval and a clinically meaningful effect size are also important. p < 0.01 and p < 0.001 indicate stronger evidence but the threshold is 0.05.
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