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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
Practice · 2 questions →

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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