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| == Concept == | == Formulation == |
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| The logit function is the log of odds: | The '''logit function''' is the log of odds: |
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| Note the [[Calculus/Trigonometry|notation of artan]]. | Note the [[Calculus/Trigonometry|notation of inverse hyperbolic tangent]]. The inverse of the logit function is commonly referred to as the '''logistic function'''. {{attachment:logistic.svg}} |
Logit
A logit is a logical unit. It is a unit for analyzing odds.
Contents
Formulation
For a probability p, the odds are p/(1-p).
The logit function is the log of odds:
Note the notation of inverse hyperbolic tangent.
The inverse of the logit function is commonly referred to as the logistic function.
