Accession Number : AD0686677

Title :   A COMPUTER PROGRAM FOR ESTIMATING TRUE-SCORE DISTRIBUTIONS AND GRADUATING OBSERVED-SCORE DISTRIBUTIONS.

Descriptive Note : Technical rept.,

Corporate Author : EDUCATIONAL TESTING SERVICE PRINCETON N J

Personal Author(s) : Wingersky,Marilyn S. ; Lees,Diana M. ; Lennon,Virginia ; Lord,Frederic M.

Report Date : JAN 1969

Pagination or Media Count : 43

Abstract : The program takes a frequency distribution of number-right test scores and produces (1) an estimated distribution of true scores for the group tested, computed on the assumption that the errors of measurement have a certain compound binomial distribution, (2) the corresponding smoothed distribution of actual scores, and (3) a chi-square for comparing the smoothed and the actual distributions. All instructions and background information necessary for practical use of the program are given. (Author)

Descriptors :   (*PSYCHOLOGICAL TESTS, COMPUTER PROGRAMMING), DISTRIBUTION FUNCTIONS, ERRORS, STATISTICAL TESTS

Subject Categories : Psychology
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE