1. 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 goodsCompare one-tailed
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Examples from the Web for two-tailed

Historical Examples of two-tailed

  • 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.