Description of mondatx and mondaty

mondatx contains Form X data and mondaty contains Form Y data.

The first 36 columns of each record contain scored item responses
(0/1) for 36 items.  Columns 37 and 38 contain the total score.  Columns
39 and 40 contain the score on the common items.

This data set is used in the illustrative examples in Chapters 4 through
six of Kolen and Brennan (1995).
