A.99% B.45% C.99.5% D.47.5% E.49.5%
A.算術(shù)均數(shù),幾何平均數(shù),中位數(shù) B.幾何平均數(shù),中位數(shù) C.算術(shù)平均數(shù),中位數(shù) D.算術(shù)平均數(shù) E.都可以計(jì)算