logit

English

Etymology

Blend of logistic +‎ probit, coined by Joseph Berkson in 1944.^[1]

Pronunciation

IPA^(key): /ˈloʊdʒɪt/

Noun

logit (plural logits)

(mathematics) 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:
$\operatorname {logit} (p)=\log \left({\frac {p}{1-p}}\right)=\log(p)-\log(1-p).\!\,$

References

↑ Berkson, Joseph (1944), “Application of the Logistic Function to Bio-Assay”, in Journal of the American Statistical Association‎, volume 39, issue 227 (September), pages 357-365

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