(1857–1936), English mathematician, the principal founder of 20th-century statistics. He defined the concept of standard deviation and devised the chi-square test.
Definition of Pearson, Karl in US English:
Pearson, Karl
proper nounˈpi(ə)rsən
(1857–1936), English mathematician, the principal founder of 20th-century statistics. He defined the concept of standard deviation and devised the chi-square test.