2025 · Q91
Which measure of central tendency is least affected by the presence of extreme observations?
Elementary MathematicsStatistics
- AArithmetic mean
- BGeometric mean
- CHarmonic mean
- DMedian
Explanation
The median depends only on the middle order statistics, so extreme observations barely move it. The arithmetic, geometric, and harmonic means all use every value and shift with outliers. Hence the median is least affected by extremes.