假設(shè)未來(lái)經(jīng)濟(jì)有四種可能狀態(tài):繁榮、正常、衰退、蕭條,對(duì)應(yīng)地發(fā)生的概率是0.2,0.4,0.3,0.1。 某理財(cái)產(chǎn)品在四種狀態(tài)下的收益率分別是9%,12%,10%,5%,則該理財(cái)產(chǎn)品收益率的標(biāo)準(zhǔn)差是()
A.2.07 % B.2.65% C.3.10% D.3.13%
A.10% B.11% C.12% D.13%
假設(shè)未來(lái)經(jīng)濟(jì)有四種可能狀態(tài):繁榮、正常、衰退、蕭條,對(duì)應(yīng)地發(fā)生的概率是0.2,0.4,0.3,0.1。某理財(cái)產(chǎn)品在四種狀態(tài)下的收益率分別是9%,12%,10%,5%,則該理財(cái)產(chǎn)品的期望收益率是()
A.8.5 % B.9.1% C.9.8% D.10.1%