is anyone aware of a toolbox that deals with regression diagnostics? i want to test for every single problem that I might face in simple linear regressions such as multi-collinearity,heteroskedasticity,autocorrelation, the presence of outliers, normality etc… I am sure that many people were interested in this using matlab . so should I tackle these issues one by one or someone did manage to compile them in a book or toolbox?
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