probit
nounUK /ˈpɹɒbɪt/ · US /ˈpɹɑbɪt/
Etymology Blend of probability + unit. Coined by American statistician Chester Ittner Bliss in 1934: “These arbitrary probability units have been termed ‘probits’…”
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Mathematics, Sciences, Statistics A unit, derived from a standard normal distribution, used in measuring the responses to doses.
- The only limitation of probit models is that they require normal distributions for all unobserved components of utility. […] In the current section, I describe three simulators that are applicable for probits of any form: accept–reject, smoothed accept– reject, and GHK.2002, chapter 5, in Behavioral Models, UC Berkeley, archived from the original on 12 Nov 2025, page 101,119:
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The probit function, the inverse of the standard normal cumulative distribution function.