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黄路迦 · 2023年04月22日

AC能解释一下吗

NO.PZ2021101401000011

问题如下:

Yuen and Ruckey discuss the differences between the historical simulation and Monte Carlo simulation, then design the simulations, making key decisions at various steps. During the process, Yuen expresses a number of concerns:

Concern 3: The distribution of Factor 1 returns exhibits excess kurtosis and negative skewness.

Based on Concern 3, the Factor 1 strategy is most likely to:

选项:

A.

be favored by risk-averse investors.

B.

generate surprises in the form of negative returns.

C.

have return data that line up tightly around a trend line.

解释:

B is correct. The distribution of Factor 1 returns exhibits excess kurtosis and negative skewness (relative to the normal distribution). The excess kurtosis implies that these strategies are more likely to generate surprises, meaning extreme returns, whereas the negative skewness suggests those surprises are more likely to be negative (than positive).

A is incorrect because risk-averse investors are more likely to prefer distribution properties such as positive skew (higher probability of positive returns) and lower to moderate kurtosis (lower probability of extreme negative surprises).

The distribution of Factor 1 returns exhibits excess kurtosis and negative skewness.

C is incorrect because the distribution of Factor 1 returns exhibits excess kurtosis and negative skewness. The joint distribution of such returns is rarely multivariate normal—so, typically the means and variances of these returns and the correlations between them are insufficient to describe the joint return distribution. In other words, the return data do not line up tightly around a trend line because of fat tails and outliers.

AC选项能解释一下吗

1 个答案

星星_品职助教 · 2023年04月23日

同学你好,

题目问excess kurtosis and negative skewness.会造成什么影响。

A选项说风险厌恶投资者喜欢这两点,这个描述错误。excess kurtosis and negative skewness会导致收益出现极端损失。

C选项描述return的数据比较集中,不离散。由于excess kurtosis and negative skewness会导致极端值的出现,这个描述同样错误。

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NO.PZ2021101401000011 问题如下 Yuen anRuckey scuss the fferences between the historicsimulation anMonte Carlo simulation, then sign the simulations, making key cisions various steps. ring the process, Yuen expresses a number of concerns: • Concern 3: The stribution of Factor 1 returns exhibits excess kurtosis annegative skewness.Baseon Concern 3, the Factor 1 strategy is most likely to: A.favorerisk-averse investors. B.generate surprises inthe form of negative returns. C.have return ta thline up tightly arouna trenline. B is correct. The stribution of Factor 1 returns exhibits excess kurtosis annegative skewness (relative to the normstribution). The excess kurtosis implies ththese strategies are more likely to generate surprises, meaning extreme returns, wherethe negative skewness suggests those surprises are more likely to negative (thpositive).A is incorrebecause risk-averse investors are more likely to prefer stribution properties supositive skew (higher probability of positive returns) anlower to morate kurtosis (lower probability of extreme negative surprises). The stribution of Factor 1 returns exhibits excess kurtosis annegative skewness.C is incorrebecause the stribution of Factor 1 returns exhibits excess kurtosis annegative skewness. The joint stribution of sureturns is rarely multivariate normal—so, typically the means anvariances of these returns anthe correlations between them are insufficient to scrithe joint return stribution. In other wor, the return ta not line up tightly arouna trenline because of ftails anoutliers. B.generate surprises in the form of negative returns.老师这个surprise这里是表示什么?

2023-05-06 14:33 1 · 回答

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2022-08-15 10:04 1 · 回答

NO.PZ2021101401000011 have return ta thline up tightly arouna trenline.C的这句话是什么意思,解析没看懂,是不是正态和是否line up tightly arouna trenline有什么关系吗

2022-02-13 12:55 1 · 回答