The aim of this paper is to establish similarities or differences betw
een water sorption characteristics of the most important Argentine whe
at varieties and to propose a statistical methodology for their compar
ison. Ten varieties of wheat were studied by an isopiestic method at 2
5-degrees-C. A balanced two-way analysis of variance with interactions
was used The usual F-tests, assuming normality of the errors, and fre
e-distribution tests were carried out. For the latter test specific so
ftware was developed. Transformations were eventually made in order to
verify the underlying assumptions of the model. This methodology allo
ws the grouping of 10 varieties according to nonsignificant difference
s.