EXACTFIT: Computer Program for Exact Chi-square Goodness-of- Fit

Document Type

Article

Journal/Book Title

Decision Line

Publisher

Decision Sciences Institute

Publication Date

1978

Volume

9

Issue

1

First Page

6

Last Page

6

Abstract

FITEST, a FORTRAN IV computer program, performs what is termed an exact chi-square test (ECST) to assess the goodness-of-fit between an observed and a theoretical distribution. This test is an alternative to the chi-square and Kolmogorov-Smirnov goodness-of-fit tests. Because it is based on less restrictive assumptions, the ECST may be more appropriate. However, the test imposes a computational burden which, if not handled by an efficiently designed computer algorithm, makes it prohibitively expensive on all but trivial problems. FITEST, through an efficiently designed algorithm, makes an ECST possible for any problem at a reasonable cost.

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