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A Computer Program for Cumulative Item Statistics

University of Tennessee at Chattanooga

A computer program was developed for the accumulation of reliability information for items which are repeatedly administered to groups of examinees. The program, ISTAT, is a more general alternative to a program provided by Morris (1979). ISTAT is intended primarily for the pretesting of items in which tests composed of subsets of an item pool are administered to separate groups of examinees. In addition to accumulating item means and covariances across examinees, the user may elect to obtain a variety of ancillary item statistics. Written in standard FORTRAN, ISTAT can be easily adapted to permit use on many computers.

Educational and Psychological Measurement, Vol. 43, No. 1, 155-158 (1983)
DOI: 10.1177/001316448304300119


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