MultivariateTDistribution (Obsolete Multivariate Statistics Package Symbol)

As of Version 8, MultivariateTDistribution is part of the built-in Mathematica kernel.

NegativeMultinomialDistribution (Obsolete Multivariate Statistics Package Symbol)

As of Version 8, NegativeMultinomialDistribution is part of the built-in Mathematica kernel.

Nonlinear Regression Package (Obsolete Nonlinear Regression Package Tutorial)

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 ...

SequentialSumOfSquares (Obsolete Regression Common Package Symbol)

As of Version 7.0, SequentialSumOfSquares has become a property of LinearModelFit.

PolyaFieldPlot (Obsolete Vector Field Plots Package Symbol)

As of Version 7.0, PolyaFieldPlot has been superseded by VectorPlot.