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2024-07-05 23:38Board member Arnold Brown asks O’Reilly about the use of high-frequency (daily) data in developing capital market expectations. O’Reilly answers, “Sometimes it is necessary to use daily data to obtain a data series of the desired length. Ironically, high-frequency data improves the precision of sample variances, covariances, and correlations but not the precision of the sample mean. High-frequency data are more sensitive to asynchronism across variables.”怎么理解關(guān)于high-frequency (daily) data 這段話？
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
152****1988助教
2024-07-06 00:08
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高頻數(shù)據(jù)存在異步性的問題，不是數(shù)據(jù)頻率越高越好
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