【正确答案:A】
该理财产品的期望收益率=0.2×9%+0.4×12%+0.3×10%+0.1 x 5%=10.1% 方差=[(9%-10.1%)^2*0.2+(12%-10.1%)^2*0.4+(10%-10.1%)^2*0.3+(5%-10.1%)^2*0.1]=0.000429 标准差=2.07%

【正确答案:A】
该理财产品的期望收益率=0.2×9%+0.4×12%+0.3×10%+0.1 x 5%=10.1% 方差=[(9%-10.1%)^2*0.2+(12%-10.1%)^2*0.4+(10%-10.1%)^2*0.3+(5%-10.1%)^2*0.1]=0.000429 标准差=2.07%