
			       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.

