Examlex
The equilibrium price and quantity in a free market usually reflect private marginal costs and benefits, not social ones.
Securities' Returns
The profit or loss generated on a security over a particular period, usually expressed as a percentage.
Variances
The quantitative measure of the difference between actual and expected behavior, often used in finance to assess volatility of returns or tracking errors.
Covariances
An indicator of the extent to which two variables fluctuate in tandem.
Risky Securities
Financial instruments carrying a higher potential for loss, often offering greater potential returns to compensate for the increased risk.
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