مقارنة المقدرات الحصينة في اسلوب التحليل العاملي

Abstract

Robust Factor Analysis is used to analyze a large number of variables to extract new ones whose number is fewer than those factors to which the difference in these variables is attributed . Such a statistical analysis can be used in a broader scope of fields and scientific activities . Related studies have proved that data without any outliers is but exception within scientific realm . Such a problem can be avoided through using certain suitable robust methods for a model or via primary clearance of data from outliers , and then applying classical statistical methods of factor analysis . The estimation of location and Scatter with multivariate together with affine equivariant and high break down. Become hard to apply and need much time for calculation as dimensions increase . In this paper we study a sample of (123) persons with conditions of the chest and medical diseses and (16) variables deal with three robust estimators .