| 单词 | covariance |
| 释义 | covariance /koh vair"ee euhns/, n. Statistics. the expectation or mean value of the variable formed by multiplying the differences obtained by subtracting two given variates from their respective means; the product of the standard deviations of two given variates and the coefficient of correlation between them. [1875-80; CO- + VARIANCE] |
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