Logit

//ˈloʊd͡ʒɪt// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    the inverse of the "sigmoid" or "logistic" function used in mathematics, especially in statistics. The logit of a number p between 0 and 1 is given by the formula

    "operatorname logit(p)= log (p/(1-p))= log (p)- log (1-p).!,"

Example

More examples

"operatorname logit(p)= log (p/(1-p))= log (p)- log (1-p).!,"

Etymology

Blend of logistic + unit, by analogy with probit, coined by Joseph Berkson in 1944: “I use this term [logit] for ln p/q following Bliss, who called the analogous function which is linear on x for the normal curve ‘probit.’”

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.