An index of dispersion and a related standardized coefficient of variation for ordinal categorical data were recently introduced in this journal. These two measures were based on the use of category scores. In this paper, we show these measures can alternatively be expressed in terms of cumulative proportions (probabilities).
Get full access to this article
View all access options for this article.
References
1.
AgrestiA.Analysis of ordinal categorical data.New York: Wiley, 1984.
2.
KvålsethT. O.Coefficients of variation for nominal and ordinal categorical data.Perceptual and Motor Skills, 1995, 80, 843–847.
3.
WeisbergH. F.Central tendency and variability.Newbury Park, CA: Sage, 1992.
