
			       THE CROSS PACKAGE


	THE CROSS PACKAGE OF PROGRAMS FOR SURVEY ANALYSIS, MODELED IN
	PART AFTER DARTMOUTH'S PROJECT IMPRESS, WAS DEVELOPED IN 1972 AT
	WHEATON COLLEGE IN NORTON, MASS.  THE PACKAGE CONSISTS OF FIVE
	PRIMARY PROGRAMS (SURVEY, SORTER, CROSS, MERGE, AND UNITE) AND
	THREE SECONDARY ONES (CROSS1, CROSS2, AND XTAB), ALL WRITTEN IN
	FORTRAN IV TO BE RUN ON A PDP-10 TIME-SHARING SYSTEM.

	THE PROGRAM SURVEY READS CODED RESPONSES TO A QUESTIONNAIRE AND
	WRITES THEM INTO AN ASCII DATA FILE.

	THE PROGRAM SORTER TABULATES THE CODED RESPONSES TO EACH QUES-
	TION OF A QUESTIONNAIRE BY FREQUENCIES OR PERCENTAGES OR BOTH.

	THE PROGRAM CROSS CORRELATES RESPONSES TO SELECTED QUESTIONS OF
	A QUESTIONNAIRE TO GIVE MARGINAL FREQUENCIES, CROSS-TABULATIONS,
	AND OTHER STATISTICS AND PERMITS THE COLLAPSING OF TABLES AND
	THE COMBINING OF VARIABLES.

	THE PROGRAM MERGE COMBINES UP TO 64 FILES OF RESPONSES TO THE
	SAME QUESTIONS BY DIFFERENT RESPONDENTS.

	THE PROGRAM UNITE COMBINES TWO FILES OF RESPONSES TO DIFFERENT
	QUESTIONS BY THE SAME RESPONDENTS.

	THE DATA ANALYSIS PART OF THE PROGRAM CROSS IS AVAILABLE SEPAR-
	ATELY AS THE PROGRAM CROSS1.  THE DATA MANIPULATION PART CAN BE
	RUN SEPARATELY AS THE PROGRAM CROSS2.

	THE PROGRAM XTAB CROSS-TABULATES PAIRS OF VARIABLES (WITH OR
	WITHOUT A CONTROL VARIABLE) GIVING FREQUENCIES, PERCENTAGES, OR
	OTHER STATISTICS DESIRED BY THE USER.  DATA ARE ENTERED BY THE
	USER INSTEAD OF BEING READ FROM A FILE.

