As of Version 7.0, ConfidenceLevel is part of the built-in Mathematica kernel. >>
BasisNames
(Obsolete Linear Regression Package Symbol) As of Version 7.0, BasisNames has become an optional argument for LinearModelFit.
As of Version 7.0, DesignMatrix is part of the built-in Mathematica kernel.
As of Version 7.0, IncludeConstant has been renamed to IncludeConstantBasis and is part of the built-in Mathematica kernel.
As of Version 8, PrincipalComponents is part of the built-in Mathematica kernel.
As of Version 6.0, NotationBoxTag has been superseded by "NotationTemplateTag" and by ParsedBoxWrapper.
As of Version 6.0, NotationMadeBoxesTag has been superseded by "NotationMadeBoxesTag" and by ParsedBoxWrapper.
As of Version 6.0, NotationPatternTag has been superseded by "NotationPatternTag".
PieChart
(Obsolete Pie Charts Package Symbol) As of Version 7.0, PieChart is part of the built-in Mathematica kernel.
As of Version 7.0, PieEdgeStyle has been superseded by ChartStyle.