Examlex
The FBI and the CIA failed to prevent the terrorist attack on the World Trade Center. Therefore, these government agencies should be abolished immediately.
Single-Index Structure
A model used in finance that relates the returns of a stock to the returns of a market index through a single beta factor.
Covariances
A measure indicating the extent to which two variables change in tandem over time.
Well-Diversified Portfolio
A collection of investments that spans various assets to minimize risk while maximizing returns.
Single Index Model
A simplified model to estimate the return of a security based on the return of the market as a whole and the security's sensitivity to the market.
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