Mahalanobis and Cooks Distance

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Ninsae
Posts: 1
Joined: Mon Jun 13, 2016 3:34 pm

Mahalanobis and Cooks Distance

Postby Ninsae » Mon Jun 13, 2016 3:38 pm

Hi all,
I ma trying to detect outliers in my data and used both Mahalanobis and Cook's distance.
Mahalanobis indicates that about 2% of my data are outliers. Cook's distance indicates no problems at all.
What do I do now? Why this discrepancy?

Thanks for the help!!
statman
Administrator
Posts: 2750
Joined: Tue Jun 12, 2007 12:08 pm
Location: Florida, USA

Re: Mahalanobis and Cooks Distance

Postby statman » Mon Jun 13, 2016 3:58 pm

Initially do a comparison search for these two, they can have different results depending on the data

Also, .............
See the note below

NOTE: Please read the Posting Guidelines and always tell us your OS, the SPSS version and information about your study and data!

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