Regression with strongly correlated data

Details Regression with strongly correlated data Regression with strongly correlated data

2007-02-27

arxiv.org/abs/math/0702843v1

Mathematics

Statistics Theory

Scientific paper

This paper discusses linear regression of strongly correlated data that arises, for example, in magnetohydrodynamic equilibrium reconstructions. We have proved that, generically, the covariance matrix of the estimated regression parameters for fixed sample size goes to zero as the correlations become unity. That is, in this limit the estimated parameters are known with perfect accuracy. Simple examples are shown to illustrate this effect and the nature of the exceptional cases in which the estimate covariance does not go to zero.

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