协变量协变量和因子的区别 _知识经验

【协变量协变量和因子的区别】

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大家好,小跳来为大家解答以上的问题。协变量和因子的区别，协变量这个很多人还不知道,现在让我们一起来看看吧！
1、Covariates are random variables you treat as concomitants (see Concomitant Variable) or as other influential variables that also affect the response. Covariates in DOE are uncontrolled variables that influence the response but do not interact with any of the other factors being tested at the time. Therefore, if they are present during the experiment then they would show as measurements of error. covariate In statistics, a covariate is a variable that is possibly predictive of the outcome under study. A covariate may be of direct interest or be a confounding variable or effect modifier.ReferenceA Dictionary of Epidemiology: Fourth Edition. John M Last ed. Oxford UP 2001. 协变量 ( c o v a r i a t e ) 指与因变量有线性相关并在探讨自变量与因变量关系时通过统计技术加以控制的变量。
2、常用的协变量包括因变量的前测分数、人口统计学指标以及与因变量明显不同的个人特征等。
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协变量 协变量和因子的区别

协变量协变量和因子的区别