A.20% B.30% C.40% D.50%
A.簡單算術(shù)股價平均數(shù) B.加權(quán)股價平均數(shù) C.修正股價平均數(shù) D.加權(quán)算術(shù)股價平均數(shù)
A.5% B.30% C.20% D.10%