Factor analysis and the index of clustering
Tóm tắt
The initial problem of factor analysis is described as a search for clustering of the test vectors. Curves are developed which give a visual picture of the clustering tendency, and an index of clustering is derived which provides a simple estimate for the number of factors.
Tài liệu tham khảo
Any power or root of ζ would vary from 0 to 1 monotonically with ζ, and hence would also serve as an index. In an application to theory of single tests it has been found that\(\sqrt[4]{\zeta }\) makes close contact with the usual index of reliability (Young, Gale and Libby, J. E. P. On the index of reliability. Unpublished manuscript).
Dickson, L. E. First course in the theory of equations. New York: John Wiley & Sons, 1922.
Mosier, C. I. Influence of chance errors on simple structure,Psychometrika, 1939,4, 33–44.