英语词汇“linear regression”的翻译、意思、用法、释义-英汉经管词典

单词	linear regression
释义	linear regression A statistical method of measuring the extent to which variations in one variable are associated with variations in others. It is assumed that the relation between one selected variable, the ‘left-hand’ or dependent variable, and the others, the ‘right-hand’ or independent variables, can be described by a linear function of the form y_i = α₀ + α₁ x_1i + α₂ x_2i + … + α_N x_Ni + ε_i, where ε_i is a stochastic error term. The aim is to pick estimated values of α₀, α₁, etc, which minimize the sum 0198607679.linear-regression.1.jpg that is ‘unexplained’ variance in y. While the various x's are referred to as independent variables, and y as the dependent variable, regression is only a measure of association, and does not imply either that there is any causal relation, or, if there is one, that y is caused by the x's.
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