| 单词 | volatility |
| 释义 | volatility Liability to fluctuate over time. Fluctuations may be measured in absolute terms, or relative to trend. Most economic variables are volatile, but some are much more so than others: for example share prices and primary commodity prices tend to be much more volatile than wage rates and the prices of manufactures. Volatility is often measured by the coefficient of variation, which is the standard deviation divided by the mean for a series. This is not a satisfactory measure for series which can change sign, for example investment in stocks and work in progress. See also: price volatility |
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