Abstract
In this essay, I introduce "ridit analysis" commonly used in the field of medical statistics, and show that it is also useful for the analysis of linguistic count data. The ridit analysis is originally a statistical method for comparing among groups in a frequency table by means of the average ridit value. The average ridit is extremely easy to calculate and available for the statistical significance test. By applying the ridit analysis to the count data of some previous researches in Japanese linguistics, it is revealed that the analysis is applicable not only to the comparison among groups of qualitative or quantitative data but also to the quantification of each ordinal variable in a two-dimensional contingency table. The ridit analysis that is also regarded as one of the methods of exploratory data analysis (EDA) has a certain effectiveness in quantitative linguistic researches.
https://ror.org/035t8zc32 
