Cook's distance plot

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Description

Draws a Cook's distance plot.

Usage

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cooks20x(lmfit)

Arguments

lmfit

output from the function "lm()".

Value

Returns the plot and identifies the three highest Cook's values

Examples

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# Peruvian Indians data
data(peru.df)
fit1<-lm(BP~age+years+I(years^2)+weight+height, data = peru.df)
cooks20x(fit1)

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