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Tests of goodness of fit to multiple data sets

2001/05/21 by J. C. Collins, Collins, J. C., J. Pumplin +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0105207

22 pages, 8 figures

arxiv created 2001/05/21 · arxiv updated 2009/11/30

Abstract

We propose a new and rather stringent criterion for testing the goodness of fit between a theory and experiment. It is motivated by the paradox that the criterion on χ2 for testing a theory is much weaker than the criterion for finding the best fit value of a parameter in the theory. We present a method by which the stronger parameter-fitting criterion can be applied to subsets of data in a global fit.

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