An Undeservedly Forgotten Correlation Coefficient

A nonlinear correlation measure for your everyday tasks

Traditional correlation coefficients such as Pearson ρ, Spearman, or Kendall’s τ are limited to finding linear or monotonic relationships and struggle to identify more complex association structures. The recent article on TDS [1] about a new correlation coefficient ξ that aims to overcome these limitations has received a lot of attention and has been discussed intensively. One of the questions raised in the comments was …

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