問(wèn)題已解決
求問(wèn)?。?!各位老師們幫幫!謝謝,救命


瘦身果醋
期望報(bào)酬率=150*60%+60*20%-10*20%=100
標(biāo)準(zhǔn)差=(50^2*60%+40^2*20%+110^2*20%)/(1/2)=65.12
標(biāo)準(zhǔn)差率=65.12/100*100%=65.12%
風(fēng)險(xiǎn)報(bào)酬率=0.5*65.12%=32.56%
運(yùn)動(dòng)飲料
期望報(bào)酬率=180*50%+85*20%-25*30%=99.5
標(biāo)準(zhǔn)差=(80.5^2*50%+14.5^2*20%+124.5^2*30%)/(1/2)=89.06
標(biāo)準(zhǔn)差率=89.06/99.5*100%=89.51%
風(fēng)險(xiǎn)報(bào)酬率=0.6*89.51%=53.71%
2022 05/31 11:30
