In a skewed distribution, which measure of central tendency best represents the 'typical' or central value of the data?
- A Median ✓
- B Mean
- C Mode
- D Geometric mean
Correct answer: A. Median
Explanation
In a skewed distribution, extreme values pull the mean toward the tail, making it a poor representative of the central value. The median — the middle value — is resistant to outliers and extreme values, making it the preferred measure of central tendency for skewed data. The mode is the most frequent value and may not reflect central tendency adequately. Geometric mean is used for log-normally distributed data (e.g., antibody titres).
Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.