Stepwise regression is the approach that is always taken when developing a regression model to fit a curvilinear relationship between the dependent and potential independent variables.

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Stepwise regression is a method of fitting regression models in which the choice of predictive variables is carried out by an automatic procedure. It does not inherently focus on fitting curvilinear relationships; other methods like polynomial regression or transformation of variables are typically used for curvilinear relationships.

Stepwise Regression Is the Approach That Is Always Taken When