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Compatibility function
BETAINV
Returns the inverse of the cumulative beta distribution; replaced by BETA.INV.
Rarely usedDifficulty 1500 · AdvancedUsage rank #465 of 520
When to use it
The inverse cumulative beta distribution. Replaced by BETA.INV.
The shape of it
- Syntax
=BETAINV(probability, alpha, beta, [A], [B])
Worked examples
Median
=BETAINV(0.5,2,2) → 0.5
Median of a symmetric beta.
Round trip
=BETAINV(0.685470581,8,10,1,3) → 2
Reverses the BETADIST example.
Round trip
=BETAINV(0.26171875,2,3) → 0.25
Another round trip.
Worth knowing
- BETA.INV gives the same results.
- Iterative; may be slow for extreme inputs.
- A and B rescale the range.
Where it goes wrong
- #NUM! for probability outside 0 to 1.
- Flagged by the Compatibility Checker.
Related
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