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(Obsolete Linear Regression Package Symbol) As of Version 7.0, Regress has been superseded by LinearModelFit.
As of Version 7.0, NonlinearRegress has been superseded by NonlinearModelFit and is part of the built-in Mathematica kernel.
As of Version 7.0, PieEdgeStyle has been superseded by ChartStyle.
As of Version 7.0, PieExploded has been superseded by SectorSpacing.
PieLabels
(Obsolete Pie Charts Package Symbol) As of Version 7.0, PieLabels has been superseded by ChartLabels.
PieStyle
(Obsolete Pie Charts Package Symbol) As of Version 7.0, PieStyle has been superseded by ChartStyle.
As of Version 7.0, RegressionReport has been superseded by properties of LinearModelFit and NonlinearModelFit.
Weights
(Obsolete Regression Common Package Symbol) As of Version 7.0, Weights is part of the built-in Mathematica kernel.
Bezier
(Obsolete Splines Package Symbol) As of Version 7.0, some of the functionality of the Splines Package is now built into the Mathematica kernel. >>