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NOTES ON THE THEORY OF ASSOCIATION OF ATTRIBUTES IN STATISTICS Get access G. UNDY YULE G. UNDY YULE Search for other works by this author on: Oxford Academic Google Scholar Biometrika, Volume 2, Issue 2, February 1903, Pages 121–134, https://doi.org/10.1093/biomet/2.2.121 Published: 01 February 1903
G. Undy Yule (Thu,) studied this question.