NO.PZ202110140100000507
问题如下：
The approach used by Fastlane Wealth Managers most likely incorporates:
选项：
A.risk parity. B.data snooping. C.cross-validation.解释：
B is correct.
The fact that the two firms’ investment performance results differ
over similar time horizons using the same data and factors may be the result
of selection bias. Data snooping is a type of selection bias. Fastlane Wealth
Managers is most likely selecting the best-performing modeling approach and
publishing its results (i.e., data snooping).
A is incorrect because risk parity is a portfolio construction technique that
accounts for the volatility of each factor and the correlations of returns among
all factors to be combined in the portfolio. It is not regarded as selection bias.
C is incorrect because cross-validation is a technique used in the machine learning field, as well as in backtesting investment strategies, to partition data for model training and testing. It is not considered selection bias.
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