A.每種有價證券收益率的幾何平均值 B.每種有價證券收益率的方差 C.每種有價證券收益率的加權(quán)平均值 D.每種有價證券收益率的簡單平均值
A.1754.4 B.1554.5 C.1854.5 D.1954.5
A.10% B.12% C.16% D.20%