Examlex
According to the text, most adults over the age of 85 are frail.
Index Model
A statistical model to represent the returns of a security or a portfolio as a function of the returns of the market as a whole, along with random error.
Market Return
The overall return generated by the stock market or a specific segment of the market, over a given period.
Residual
The amount remaining after the major part or parts have been accounted for; in finance, often refers to the remainder left after specific calculations, such as dividends from a corporation after major expenses are paid.
Market Index
A measurement of the performance of a specific "basket" of stocks considered to represent a particular market or sector.
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