What is another word for rank-difference correlation coefficient?
Pronunciation: [ɹˈaŋkdˈɪfɹəns kˌɒɹɪlˈe͡ɪʃən kˌə͡ʊɪfˈɪʃənt] (IPA) 
When it comes to statistical analysis, the rank-difference correlation coefficient is a common term used to measure the correlation between two variables that have been ranked. However, there are several other terms used to express this concept. Some synonyms include the Spearman's rank correlation coefficient, Kendall's tau coefficient, and the Goodman-Kruskal gamma coefficient. These measures are all variations of the rank correlation coefficient but they each have different methods for calculating the correlation between two ranked variables. By having multiple terms to express the same concept, statisticians are able to select the best measure for their analysis and explore the relationship between variables from different angles.
