regrInfluential

0th

Percentile

Detecting influential cases in regression analyses

This function combines a number of criteria for determining whether a datapoint is an influential case in a regression analysis. It then sum the criteria to compute an index of influentiality. A list of cases with an index of influentiality of 1 or more is then displayed, after which the regression analysis is repeated without those influantial cases. A scattermatrix is also displayed, showing the density curves of each variable, and in the scattermatrix, points that are colored depending on how influential each case is.

Keywords
~kwd1 , ~kwd2
Usage
regrInfluential(formula, data)
Arguments
formula
The formule of the regression analysis.
data
The data to use for the analysis.
Value

A regrInfluential object, which, if printed, shows the influential cases, the regression analyses repeated without those cases, and the scatter matrix.

Aliases
• regrInfluential
Examples
regrInfluential(mpg ~ hp, mtcars);

Documentation reproduced from package userfriendlyscience, version 0.5-2, License: GPL (>= 2)

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