Abstract
References
1.
Anderson, T. W.
An Introduction to Multivariate Statistical Analysis . New York : John Wiley , 1958 .
2.
Harmon, H. H.
Modern Factor Analysis. Chicago : University of Chicago Press , 1960 .
3.
Rao, C. R.
Linear Statistical Inferences and Its Applications . New York : John Wiley , 1965 .
4.
Thurstone, L. L.
Multiple Factor Analysis. Chicago : University of Chicago Press , 1947 .