. Polynomial regression is used when O a. the independent variables are non-linear. O b. there is...

   

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Polynomial regression is used when O a. the independent variables are non-linear. O b. there is a non-linear relationship between the independent variables. O c. there is a curvilinear change in the dependent variables. o d. there is a non-linear relationship between the dependent and independent variables. Polynomial regression is used when O a. the independent variables are non-linear. O b. there is a non-linear relationship between the independent variables. O c. there is a curvilinear change in the dependent variables. o d. there is a non-linear relationship between the dependent and independent variables.