The following statements fit a quadratic regression model to the data. This enables you to estimate the linear relationship between iron content and corrosion resistance and test for the presence of a ...

Response Surface Regression: The RSREG Procedure . The RSREG procedure fits a quadratic response-surface model, which is useful in searching for factor values that optimize a response. The following ...

well-known problems with standard parametric approaches based on quadratic regression models, there has been considerable recent interest in finding new ways to evaluate such theories using ...