| 单词 | analysis of covariance |
| 释义 | > as lemmasanalysis of covariance 2. Statistics. The mean value for a population of the product of the deviations of two or more variates from their respective means; it is equal to the correlation coefficient of the variates multiplied by the standard deviation of each variate; analysis of covariance or covariance analysis: an extension of the analysis of variance to investigate and adjust for the dependence of the variate on one or more concomitant observations. ΘΚΠ the world > relative properties > number > probability or statistics > [noun] > distribution > variability or spread > measures of > relating to variance heteroscedasticity1905 homoscedasticity1905 covariance1931 communality1933 principal component1933 1931 A. L. Bailey in Jrnl. Amer. Statist. Assoc. 26 424 (heading) The analysis of covariance. 1931 A. L. Bailey in Jrnl. Amer. Statist. Assoc. 26 424 The term covariance is used here to designate the first product moment, S(x−Mx) (y−My)/N. 1939 C. H. Goulden Methods Statist. Anal. xv. 247 For a single variable the variation is frequently heterogeneous and may be sorted out into components... The same is true for the correlated variability or covariation of two variables, and the mechanism for sorting out the covariance effects is known as the analysis of covariance. 1969 B. E. Cooper Statistics for Experimentalists iv. 44 The covariance between two variables, is a measure of the joint variation between the two variables. < as lemmas |
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