| 单词 | skewness |
| 释义 | skewness A measure of distributions, showing whether large deviations from the mean are more likely one side than the other. In a symmetrical distribution, deviations either side of the mean are equally likely. Positive skewness means that large upward deviations are more likely than large downward ones; the sum of cubes of deviations from the mean is positive. Negative skewness means that large downward deviations are more likely than large upward ones; the sum of cubes of deviations from the mean is negative. In many economic variables the distribution of deviations from the mean is skewed; for example, the distributions of individual incomes and the sizes of firms are both strongly positively skewed. |
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