As of Version 7.0, DesignMatrix is part of the built-in Mathematica kernel.
Regress
(Obsolete Linear Regression Package Symbol) As of Version 7.0, Regress has been superseded by LinearModelFit.
As of Version 8, MultinormalDistribution is part of the built-in Mathematica kernel.
As of Version 8, MultivariateTDistribution is part of the built-in Mathematica kernel.
As of Version 7.0, NonlinearRegress has been superseded by NonlinearModelFit and is part of the built-in Mathematica kernel.
The built-in function FindFit allows you to perform nonlinear least squares fitting. The function NonlinearRegress gives a number of regression diagnostics and allows you to ...
As of Version 7.0, AdjustedRSquared has become a property of LinearModelFit.
As of Version 8.0, QuantilePlot is part of the built-in Mathematica kernel.
As of Version 7.0, GradientFieldPlot has been superseded by VectorPlot.
As of Version 7.0, HamiltonianFieldPlot has been superseded by VectorPlot.