Egon Pearson was the son of Karl Pearson. Egon's work with Jerzy Neyman clarified the theory of statistical inference by giving a clear rationale for hypothesis testing, as well as describing the two types of errors, power, robustness, and the likelihood ratio test. Pearson also made contributions to estimation, quality control, operations research, and statistical education. After his father's death in 1936, Pearson became managing editor of Biometrika, retaining the position for 30 years. Egon Pearson is credit with developing the method of calculating percentage points for many types of distributions. He was head of the Department of Applied Statistics at University College, London.
020