CASTI-89 TITANIUM (STATS/LIST EDITOR APP) · CALC89
invF(
Inverse F distribution: returns the value with a given area to its left.
Syntax
invF(Area, dfNumer, dfDenom)
- Group
- Distributions
- Arguments
- Takes the area and the numerator and denominator degrees of freedom.
- Availability
- Pro feature in Calc89
- Menu path
- MATH ▸ Distributions ▸ Inverse ▸ invF(
- Origin
- On the TI-89 Titanium this command comes with the preinstalled Stats/List Editor app
Example
| Input | Result |
|---|---|
| invF(0.95,5,10) | 3.32583453041 |
Typing invF(0.95,5,10) on the home screen and pressing ENTER returns 3.32583453041.
Keystrokes on the TI-89 Titanium
2NDMATH824
The same key sequence inserts invF( in Calc89, and the AI tutor shows it step by step on the on-screen keypad.
Related commands
- invNorm(Inverse normal distribution: returns the value with a given area to its left.
- invt(Inverse Student t distribution: returns the value with a given area to its left, used for t critical values.
- normCdf(Returns the probability that a normally distributed value lies between two bounds.
- normPdf(Returns the probability density of the normal distribution at a value.
- poissCdf(Returns the cumulative Poisson probability for a range of counts.
- poissPdf(Returns the Poisson probability of exactly a given count.
- tCdf(Returns the Student t distribution probability between two bounds.
- tPdf(Returns the probability density of the Student t distribution at a value.