r:regression_diagnostics
Regression Diagnostics
# Assume that we are fitting a multiple linear regression # on the MTCARS data library(car) fit <- lm(mpg~disp+hp+wt+drat, data=mtcars)
Outliers
# Assessing Outliers outlierTest(fit) # Bonferonni p-value for most extreme obs qqPlot(fit, main="QQ Plot") #qq plot for studentized resid leveragePlots(fit) # leverage plots
r/regression_diagnostics.txt · Last modified: 2018/12/16 01:24 by hkimscil