Examlex
Why are there differences in life expectancies for people of different races?
Standard Deviation
A statistic that measures the dispersion of a dataset relative to its mean and is calculated as the square root of the variance.
Variance
A statistical measurement of the dispersion between numbers in a data set, measuring how far each number in the set is from the mean.
Volatility
Measures the degree of variation of a trading price series over time, indicating the level of uncertainty or risk associated with the size of changes in a security's value.
Unsystematic Risk
The risk associated with a specific issuer of a security or investment, which can be mitigated through diversification.
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