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two-tailed

   Also found in: Wikipedia 0.01 sec.
two-tailed
adj
(Mathematics & Measurements / Statistics) 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


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Its official neckwear is the bola tie, the official tree is the paloverde, and the official butterfly is the two-tailed swallowtail.
In our tests of Hypothesis 1, we used nonparametric, two-sample, two-tailed tests of the difference between final grades assigned by full-time business faculty versus part-time business faculty in the two introductory accounting courses and in the first finance course.
To see which one of the outsourcing activities showed a statistically significant change, a two-tailed t-test was performed by comparing against no change (a score of 3).
 
 
 
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