A.平均數(shù) B.幾何均數(shù) C.算術(shù)均數(shù) D.中位數(shù) E.百分位數(shù)
A.算術(shù)平均數(shù) B.中位數(shù) C.四分位間距 D.幾何均數(shù) E.變異系數(shù)
A.2 B.0.5 C.3 D.1 E.1.9