中等MATH-STAT-010
For a symmetric unimodal distribution, which relation is the typical one?
A. mean < median < mode
B. mean = median = mode✓ 答案
C. mean > median > mode
D. the mode is necessarily 0
解說
In a symmetric unimodal distribution the centre measures coincide. mean > median > mode is the usual pattern of a right-skewed distribution, not a symmetric one.