A.算術(shù)均數(shù)B.標(biāo)準(zhǔn)差C.中位數(shù)D.四分位數(shù)間距E.方差
A.算術(shù)均數(shù) B.幾何均數(shù) C.中位數(shù) D.極差 E.第50百分位數(shù)
A.6和1.29 B.6.33和2.5 C.38和6.78 D.6和1.58 E6和2.5