In using a regression model,if a new independent variable is added,the value of the R²(coefficient of multiple determination)will ___________ decrease. A)always B)sometimes C)never

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Quizplus · Accepted Answer

Adding a new independent variable to a regression model will never decrease the R² value; it will either increase or remain the same, as R² measures the proportion of variance explained by the model and cannot decrease with additional predictors.

In Using a Regression Model,if a New Independent Variable Is