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Statistical function
F.INV
Returns the inverse of the left-tailed F probability distribution.
Rarely usedDifficulty 1550 · AdvancedUsage rank #439 of 520
When to use it
The F value at a given left-tail probability.
The shape of it
- Syntax
=F.INV(probability, deg_freedom1, deg_freedom2)
Worked examples
Critical value
=F.INV(0.95,2,10) → 4.102821
The 95th percentile on (2,10).
Median
=F.INV(0.5,5,5) → 1
Median with equal df.
Ninety percent
=F.INV(0.9,1,10) → 3.285
90th percentile on (1,10).
Worth knowing
- For a critical value at alpha use F.INV(1-alpha,...) or F.INV.RT(alpha,...).
- Replaces the left-tail use of FINV.
- Degrees of freedom are truncated.
Where it goes wrong
- #NUM! for probability outside 0 to 1.
- Iterative; extreme inputs can be slow.
Related
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