| 词汇 | covariance-matrix |
| 释义 | covariance matrix noun[ C ] mathematics specializeduk /kəʊˌveə.ri.əns ˈmeɪ.trɪks/ us /koʊˌver.i.əns ˈmeɪ.trɪks/pluralcovariance matrices uk /kəʊˌveə.ri.əns ˈmeɪ.trɪ.siːz/ us /koʊˌver.i.əns ˈmeɪ.trɪ.siːz/covariance matrixes a square matrix(= group of numbers or symbols that can be used together as a single unit to solve mathematical problems) that shows the covariance values between pairs of elements given in a random vector: An unstructured covariance matrix was assumed in both models. Covariance matrices were computed separately for boys and girls. Their examination of covariance matrices from seven field studies showed little evidence of cultural differences in developmental processes. Results in the form of a covariance matrix are available from the first author. Statistics actuarial actuary analysis of covariance background variable canonical correlation categorical variable correction factor correlation coefficient covariate cross-sectional density function entropy interpoint interquartile range multigroup non-statistical normal distribution pollster statistician stochastic |
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