CASTI-89 TITANIUM (STATS/LIST EDITOR APP) · CALC89
invChi2(
Inverse χ² distribution: returns the value with a given area to its left.
Syntax
invChi2(Area, df)
- Group
- Distributions
- Arguments
- Takes the area and the degrees of freedom.
- Availability
- Pro feature in Calc89
- Menu path
- MATH ▸ Distributions ▸ Inverse ▸ invChi2(
- Origin
- On the TI-89 Titanium this command comes with the preinstalled Stats/List Editor app
Example
| Input | Result |
|---|---|
| invChi2(0.95,2) | 5.99146454711 |
Typing invChi2(0.95,2) on the home screen and pressing ENTER returns 5.99146454711.
Keystrokes on the TI-89 Titanium
2NDMATH823
The same key sequence inserts invChi2( in Calc89, and the AI tutor shows it step by step on the on-screen keypad.
Related commands
- invF(Inverse F distribution: returns the value with a given area to its left.
- 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.