"Active investment management may at times generate additional returns of about .1%. However, the standard deviation of the typical well-diversified portfolio is about 20%, so it is very difficult to statistically identify any increase in performance." Even if true, this statement is an example of the _________ problem in deciding how efficient the markets are.

"Active investment management may at times generate additional returns of about .1%. However, the standard deviation of the typical well-diversified portfolio is about 20%, so it is very difficult to statistically identify any increase in performance." Even if true, this statement is an example of the _________ problem in deciding how efficient the markets are. 






A. magnitude

B. selection bias

C. lucky event

D. allocation






Answer: A


Investment Finance

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