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BestFitParametersDelta

BestFitParametersDelta
is a possible value for the RegressionReport option for Regress and DesignedRegress which represents the effect on parameter values if data points are omitted.

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To use BestFitParametersDelta, you first need to load the Regression Common Functions Package. You can do this by using Needs["LinearRegression`"], which will automatically load the Regression Common Functions Package, or you can load the package directly by using Needs["RegressionCommon`"].

BestFitParametersDelta gives a list of values which measure the effect of removing a data point on the fitted parameters.

The i^th element in the list measures the effect of removing the i^th element of the data set.

BestFitParametersDelta is also referred to as DFBETAS.