This book is basically aiming to give a clear path to what one should do when facing outliers problem, especially in seemingly unrelated regression equations (SURE) models. Since the assumptions underlying most SURE estimators give little consideration to influential observations, which may be present in the dataset. It is well known that outliers in the data can severely influence classical estimators and their modifications; it may lead to the imprecision of these estimators, resulting in uncertainty when assessing the effects of the explanatory variables on the response variable. To...