FITEST: A Computer Program for "Exact Chi-square" Goodness-of-Fit Significance Tests
Computers & Geosciences
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.
H. C. Romesburg, K. Marshall, and T. M. Mauk. 1981. FITEST-A FORTRAN Program for "Exact Chi-square" Goodness-of-Fit Significance Tests. Computers and Geosciences, 7:47-58.