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Statistical function

PERCENTILE.EXC

Returns the value at a percentile, excluding 0 and 1.

Rarely usedDifficulty 1300 · ProficientUsage rank #308 of 520
Practice · 2 questions →

When to use it

Percentile using the exclusive method, which treats the data as a sample from a larger population. k must be between 1/(n+1) and n/(n+1).

The shape of it

Syntax
=PERCENTILE.EXC(array, k)

Worked examples

  • First quartile

    =PERCENTILE.EXC({1,2,3,4,5},0.25) 1.5

    Position 0.25 × 6 = 1.5.

  • Median

    =PERCENTILE.EXC({1,2,3,4,5},0.5) 3

    The median is the same under both methods.

  • Out of range

    =PERCENTILE.EXC({1,2,3,4,5},0.1) #NUM!

    Position 0.6 is before the first value.

Worth knowing

  • Matches the default in Minitab and some statistics courses; PERCENTILE.INC matches most BI tools.
  • Use it when the extremes of a small sample should not be treated as the true extremes.
  • Works best with 20 or more data points.

Where it goes wrong

  • #NUM! for small k or 1-k on small samples.
  • Results differ from PERCENTILE.INC, which surprises people comparing two reports.

Related

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