Regress
(Obsolete Linear Regression Package Symbol) As of Version 7.0, Regress has been superseded by LinearModelFit.
As of Version 8, HotellingTSquareDistribution is part of the built-in Mathematica kernel.
As of Version 8, MultinomialDistribution is part of the built-in Mathematica kernel.
As of Version 8, MultinormalDistribution is part of the built-in Mathematica kernel.
As of Version 8.0, MultiPoissonDistribution has been renamed to MultivariatePoissonDistribution and is part of the built-in Mathematica kernel.
As of Version 8, MultivariateTDistribution is part of the built-in Mathematica kernel.
As of Version 8, NegativeMultinomialDistribution 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As of Version 7.0, NonlinearRegress has been superseded by NonlinearModelFit and is part of the built-in Mathematica kernel.
Spline
(Obsolete Splines Package Symbol) As of Version 7.0, some of the functionality of the Splines Package is now built into the Mathematica kernel. >>
As of Version 8.0, BoxWhiskerPlot has been renamed to BoxWhiskerChart and is part of the built-in Mathematica kernel.