%0 Journal Article %A van Reenen, Pieter %T Over oorkonden en statistiek, diachronie en determinisme %D 2009 %J Taal en Tongval, %V 61 %N 1 %P 45-71 %@ 2215-1214 %R https://doi.org/10.5117/TET2009.2.VANR %I Amsterdam University Press, %X This study discusses Versloot 2008, an important contribution to the study of language variation in older Frisian, based on charters and codices. Special attention is paid to (a) how theses charters and codices are used by Versloot in order to obtain linguistic results, and (b) to the statistical treatment of the data. It is argued that with respect to 2 x 2 tables the Fisher Exact test one-tail should be preferred to X2. %U https://www.aup-online.com/content/journals/10.5117/TET2009.2.VANR