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Compatibility function
NORMINV
Returns the inverse of the normal cumulative distribution; replaced by NORM.INV.
OccasionalDifficulty 1350 · AdvancedUsage rank #222 of 520
When to use it
The inverse normal cumulative distribution. Replaced by NORM.INV.
The shape of it
- Syntax
=NORMINV(probability, mean, standard_dev)
Worked examples
Critical value
=NORMINV(0.975,0,1) → 1.959963985
The 1.96.
Round trip
=NORMINV(0.908789,40,1.5) → 42.000002
Reverses the NORMDIST example.
Percentile
=NORMINV(0.9,100,15) → 119.2232725
90th percentile.
Worth knowing
- NORM.INV is identical.
- Random normal: NORMINV(RAND(),mean,sd).
- Safety stock and percentiles.
Where it goes wrong
- #NUM! for probability of 0, 1, or outside.
- Flagged by the Compatibility Checker.
Related
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