statsmodels.stats.outliers_influence.OLSInfluence.dffits  
OLSInfluence.dffits() [source]
 
(cached attribute) dffits measure for influence of an observation based on resid_studentized_external, uses results from leave-one-observation-out loop It is recommended that observations with dffits large than a threshold of 2 sqrt{k / n} where k is the number of parameters, should be investigated.    
Returns:

 
dffits (float) 
dffits_threshold (float)     References Wikipedia 


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