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(statistics) (of a significance test) concerned with the hypothesis that an observed value of a sampling statistic differs significantly from a given value, where an error in either direction is relevant: for instance, in testing the fairness of scales, an inspector will seek to exclude both overweight and underweight goods Compare one-tailed
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Examples from the Web for two-tailed
Historical Examples
  • I repeated this experiment several times, and it always appeared to succeed; and all the two-tailed lizards were called mine.

    Olla Podrida Frederick Marryat (AKA Captain Marryat)
  • I want to get that two-tailed toad, and Ill do anything in reason to secure a specimen.

  • Youd better come on and look for that two-tailed toad, Professor, advised Jerry.

  • But if I get my two-tailed toad Ill not want anything else, he said, as they got underway again.

  • And my two-tailed toad, added Professor Snodgrass, looking carefully on the ground as he advanced for a possible rare specimen.

  • And I havent seen anything of that two-tailed toad, either, spoke Professor Snodgrass.

  • The professor began searching among the dead snakes for a two-tailed toad, but did not find any.

  • Rouen was very full of people, and the leopards of England and the two-tailed lion of Burgundy were to be seen on every side.

    Joan of Arc Lucy Foster Madison
  • The two-tailed vampire cat destroys a beautiful maiden and, taking her form, preys on a handsome prince.

    Human Animals Frank Hamel

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