two-tailed

British  

adjective

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 goods Compare one-tailed

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Example Sentences

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two-tailed

The test may be left-, right-, or two-tailed, and its hypotheses are always expressed in terms of the variance or standard deviation.

From Textbooks ● Mar. 27, 2020

This was called a two-tailed test because the alternative hypothesis allowed that the mean could have come from a population which was either larger or smaller than the hypothesized mean in the null hypothesis.

From Textbooks ● Nov. 29, 2017

This gives us the decision rule for testing a hypothesis for a two-tailed test:

From Textbooks ● Nov. 29, 2017

This is a one-tailed test and all of the alpha probability is placed in just one tail and not split into α/2 as in the above case of a two-tailed test.

From Textbooks ● Nov. 29, 2017

The advantage of driving by a two-tailed dog, as most mechanics know, is in equalizing the tendency to spring slender parts while they are being turned.

From Turning and Boring A specialized treatise for machinists, students in the industrial and engineering schools, and apprentices, on turning and boring methods, etc. by Franklin D. Jones