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NCJ Number: 89668 Add to Shopping cart Find in a Library
Title: Using EVAL for Data Analysis - A Primer
Author(s): T K Wong
Corporate Author: Massachusetts Institute of Technology
Operations Research Ctr
United States of America
Date Published: 1978
Page Count: 47
Sponsoring Agency: Massachusetts Institute of Technology
Cambridge, MA 02139
National Institute of Justice (NIJ)
Washington, DC 20531
National Institute of Justice/
Rockville, MD 20849
NCJRS Photocopy Services
Rockville, MD 20849-6000
US Dept of Justice NIJ Pub
Washington, DC 20531
Grant Number: 78 NI-AX-0007
Sale Source: National Institute of Justice/
NCJRS paper reproduction
Box 6000, Dept F
Rockville, MD 20849
United States of America

NCJRS Photocopy Services
Box 6000
Rockville, MD 20849-6000
United States of America
Type: Report (Study/Research)
Language: English
Country: United States of America
Annotation: This paper presents some of the commands necessary for a user to analyze information stored in EVAL, a computer program that maintains on-line the records and evaluation reports of the research project 'An Empirical Study of Methods Used in Criminal Justice Evaluations.'
Abstract: The EVAL system is currently implemented on the Multics Operating System at the Massachusetts Institute of Technology. After providing instructions on gaining access to Multics, EVAL messages are described; they include (1) broadcast messages, which are of general interest to users; (2) system messages, which provide the name of the user, the date and time when a report is added, and the report identification number; (3) memo, which allows users to send messages to other EVAL users; (4) prompting messages, which tell a user that required information is missing or that information supplied by the user was incorrectly specified; and (5) information messages, which tell the user about the status of EVAL or the result of the EVAL command the user previously issued. Six EVAL commands are described, and they are sufficient to analyze the information stored in EVAL. The list command yields all reports stored in the system, and the print command prints a report or reports on the terminal. The write command is essentially the same as the print command, except that the output is stored in a file. The 'dprint' command differs from the write and print command in that the output is printed by a high speed line-printer instead of at the terminal. The searching command enables the user to locate reorts that satisfy the searching criteria, and the stat command provides a frequency count for the answers to each question in the questionnaire for each evaluation report. Tables are provided for the various codes, and the appendixes contain EVAL's questionnaire and a display of a typical storage record.
Index Term(s): Data analysis; Evaluation techniques; Evaluative research; Information Systems and Technology
Note: Working Paper OR 086-78
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