On the Criterion that a Given System of Deviations from the Probable in the Case of a Correlated System of Variables is such that it Can Reasonably Be Supposed to have Arisen from Random Sampling in The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, Vol. L. (50), July to December 1900, pp. 157-175
London: Taylor and Francis, 1900. 1st Edition. BOUND FIRST EDITION OF A SEMINAL PAPER IN THE HISTORY OF STATISTICS, Pearson’s 'chi-squared' goodness of fit test, "one of the most useful of all statistical tests" and "one of Pearson's greatest single contributions to statistical methodology" (DSB). Pearson had found “the exact..... More