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Posted by on Tuesday, August 31, 2010 at 12:04pm.

One of the tests for Outlier is anything greater or smaller than 1.5 IQR.

Why is 1.5 chosen to be the benchmark, instead of 2 or 1 IQR?

  • Statistics - , Tuesday, August 31, 2010 at 10:38pm

    John Tukey supposedly said when interviewed that 1.5 was used "because 1 is too small and 2 is too large."

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