CASCALC89 COMMAND · NOT ON THE TI-89
invBinom(
Inverse cumulative binomial distribution: finds the number of successes at which the cumulative probability reaches a given value.
Syntax
invBinom(CumulativeProb, NumTrials, Prob[, OutputForm])
- Group
- Distributions
- Arguments
- Takes the cumulative probability, the number of trials, the success probability and an optional output form.
- Availability
- Pro feature in Calc89
- Menu path
- MATH ▸ Distributions ▸ Inverse ▸ invBinom(
- Origin
- TI-Nspire CAS style command; the TI-89 Titanium handheld does not have it
Example
| Input | Result |
|---|---|
| invBinom(0.77,30,1/6,1) | [[5,0.61644701469][6,0.7765371239]] |
Typing invBinom(0.77,30,1/6,1) on the home screen and pressing ENTER returns [[5,0.61644701469][6,0.7765371239]].
Keystrokes in Calc89
2NDMATH825
The sequence above inserts invBinom( in Calc89.
Related commands
- invBinomN(Finds the number of trials at which the cumulative binomial probability for a given number of successes reaches a given value.
- invChi2(Inverse χ² distribution: returns the value with a given area to its left.
- 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.