以下是一段来自维基百科上的原话,大体上我们可以理解为:在计量经济学领域内,协变量和控制变量是一回事。
Depending on the context, an independent variable is sometimes called a "predictor variable", regressor, covariate, "manipulated variable", "explanatory variable", exposure variable (see reliability theory), "risk factor" (see medical statistics), "feature" (in machine learning and pattern recognition) or "input variable".[13][14] In econometrics, the term "control variable" is usually used instead of "covariate".