As of Version 7.0, CoefficientOfVariation has become a property of LinearModelFit.
As of Version 7.0, FitCurvatureTable has become a property of NonlinearModelFit.
As of Version 7.0, ParameterBias has become a property of NonlinearModelFit.
As of Version 7.0, PartialSumOfSquares has become a property of LinearModelFit.
As of Version 7.0, RegressionReport has been superseded by properties of LinearModelFit and NonlinearModelFit.
As of Version 7.0, RegressionReportValues has been superseded by LinearModelFit[...]["Properties"] and NonlinearModelFit[...]["Properties"].
As of Version 7.0, SequentialSumOfSquares has become a property of LinearModelFit.
As of Version 7.0, StartingParameters is no longer supported.
Weights
(Obsolete Regression Common Package Symbol) As of Version 7.0, Weights is part of the built-in Mathematica kernel.
Accuracy::mnprec Precision::mnprec