Key points are not available for this paper at this time.
This research was supported by grants from the National Science Foundation. Clogg was supported in part by Grant SES-7823759 and Goodman by Grant SES-8303838. Previous versions of this chapter were presented at the annual meetings of the American Statistical Association, Detroit, August 1981, and at the annual meetings of the American Sociological Association, Detroit, September 1983. For helpful comments, the authors are indebted to William Dillon, Otis Dudley Duncan, Anton Formann, Rolf Langeheine, George Macready, Thomas Madden, Peter Marsden, James Shockey, and Marylee Taylor.
Clogg et al. (Tue,) studied this question.