Flower
2024-07-13 21:27“One bias results from the use of appraisal data in the absence of market transaction data. Appraisal values tend to be less volatile than market determined values for identical assets. As a result, measured volatilities are biased downward and correlations with other assets tend to be exaggerated.”怎么理解
官網(wǎng)題認(rèn)為相關(guān)性表述不對(duì),為什么呢
所屬:CFA Level III > Capital Market Expectations 視頻位置 相關(guān)試題
來源: 視頻位置 相關(guān)試題
1個(gè)回答
Johnny助教
2024-07-15 10:34
該回答已被題主采納
同學(xué)你好,可以參考直播課上的總結(jié),如果是采用評(píng)估值來體現(xiàn)風(fēng)險(xiǎn)和收益,那么呈現(xiàn)出的收益率的波動(dòng)率是會(huì)被低估了,比真實(shí)的波動(dòng)率要低。此外,appraisal value還會(huì)低估和其他資產(chǎn)的相關(guān)度,導(dǎo)致呈現(xiàn)出的分散化效果較好,但實(shí)際上要是去除平滑的話,那么實(shí)際的相關(guān)系數(shù)并不低,分散化效果沒有那么好
