ly2023-08-05 14:04:42

老师，百题andrew twain第四题，数据频率高产生相关性低的估计。以下题为啥是相反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.”With respect to his explanation of appraisal data bias, O’Reilly is most likely: correct. incorrect, because the measured volatilities biased upward. incorrect, because correlations with other assets tend to be understated.