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单词 volatility
释义
volatility

Statistics
  • An alternative name for standard deviation which is used in the context of finance.


Chemical Engineering
  • The tendency and measure of the ability of a liquid to go into the vapour phase expressed as the ratio of the mole fraction in the gas phase (yA) to that in the liquid phase (xA):

    KAyAxA

    The relative volatility is a comparison of the lightness of two components and can be found by taking a ratio of the vapour phases of the two components.


Economics
  • Same as dispersion. In finance, volatility usually refers to the rate at which a financial variable, such as stock price, moves up or down over time. Volatility is measured by the standard deviation or, sometimes, by the variance. The (absolute) empirical volatility of a stock price is usually calculated as the annualized standard deviation of daily change in price. A measure of the volatility of a stock relative to the market is its beta coefficient.


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