Biostatistics: Mean, Median, Risk Ratios · USMLE Step 1

Which measure is most appropriate for describing the central value of ordinal data such as pain scales?

  1. Mean
  2. Median
  3. Standard deviation
  4. Variance
Show answer and explanation

Correct answer: Median

The median is appropriate for ordinal data because values represent ranked categories, not equal intervals.

Difficulty: Medium Question 5 of 20

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