Upper Fence Calculator

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Tukey used 1.5 for mild outliers and 3 for extreme outliers. Values between 1 and 3 are common.
Upper fenceNo outliers detected
35

Values above this are upper outliers

Lower fence-5
Q1 (first quartile)10
Q3 (third quartile)20
IQR10
Outliers found0
Outlier valuesNone
Sample size (n)11
Q110
IQR10
Q320
Upper fence35

Upper fence: 35.0000 | Lower fence: -5.0000

  • Any value above 35.0000 is an upper outlier under the current multiplier (k = 1.5).
  • Any value below -5.0000 is a lower outlier.
  • Your dataset contains no outliers by this rule.
  • Tukey's 1.5 x IQR rule is robust to skew and works without assuming a normal distribution.

Next stepResults are based on raw dataset. Switch to "Raw data" mode to let the calculator compute Q1 and Q3 automatically from your numbers.

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