Regression diagnostics and lack-of-fit tests mainly focus on linear-linear regression models. When the design points are distributed on the circumference of a circle, difficulties arise as there is no ...

This is a preview. Log in through your library . Abstract We propose two test statistics for use in inverse regression problems Y = Kθ + ε, where K is a given linear operator which cannot be ...

Simply collecting data is not enough. You can fill spreadsheets with data, but it's useless if you can't act on it. Regression is one of the most powerful statistical tools for finding relationships ...