To Determine Whether Portfolio Performance Is Statistically Significant Requires

Multiple Choice

To determine whether portfolio performance is statistically significant requires

A) a very long observation period due to the high variance of stock returns.
B) a short observation period due to the high variance of stock returns.
C) a very long observation period due to the low variance of stock returns.
D) a short observation period due to the low variance of stock returns.
E) a low variance of returns over any observation period.