Difference between revisions of "Logit"
(category math functions) |
|||
| Line 1: | Line 1: | ||
| + | [[Category:Math Functions]] | ||
[[Category:Doc Status D]] <!-- For Lumina use, do not change --> | [[Category:Doc Status D]] <!-- For Lumina use, do not change --> | ||
| Line 9: | Line 10: | ||
where <math>0<p<1</math>. | where <math>0<p<1</math>. | ||
| − | :[[image: | + | :[[image:logitGraph.png]] |
The inverse of the [[Logit]] function is <code>[[Sigmoid]](x)</code> (before [[Analytica 4.5]], the function [[InvLogit]] was used, defined in the '''Generalized Regression'' library). The logit function is sometimes called the log-odds function. | The inverse of the [[Logit]] function is <code>[[Sigmoid]](x)</code> (before [[Analytica 4.5]], the function [[InvLogit]] was used, defined in the '''Generalized Regression'' library). The logit function is sometimes called the log-odds function. | ||
Revision as of 18:11, 14 January 2013
Built-in function new to Analytica 4.5. Before that, supplied as a function in the Generalized Regression library.
Logit(p)
The Logit function is equal to
- [math]\displaystyle{ Logit(p) = \ln\left( p\over{1-p} \right) }[/math]
where [math]\displaystyle{ 0\lt p\lt 1 }[/math].
The inverse of the Logit function is Sigmoid(x) (before Analytica 4.5, the function InvLogit was used, defined in the 'Generalized Regression library). The logit function is sometimes called the log-odds function.
See Also
Comments
Enable comment auto-refresher