The method of generalised estimating equations for regression modelling of clustered outcomes allows for specification of a working matrix that is intended to approximate the true correlation matrix ...

To prove that correlation between two variables does not necessarily mean that one causes the other, Tyler Vigen has created a series of comical charts that show "spurious correlations." A spurious ...

This is a preview. Log in through your library . Abstract Correlation matrices play a key role in many multivariate methods (e.g., graphical model estimation and factor analysis). The current state-of ...