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

This tells us that this is a two-tailed test: if the machine is malfunctioning it will be shutdown regardless if it is from over-filling or under-filling.

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

Finally, there is no presumption as to which format might lead to higher grades so the hypothesis is stated as a two-tailed test.

From Textbooks • Nov. 29, 2017

Is this a left-tailed, right-tailed, or two-tailed test?

From Textbooks • Sep. 19, 2013

To her sails had been stitched gaudy ramping lions of scarlet saye, and from her mainyard, now dipping in the water, had hung the broad two-tailed pennant with the Virgin and Child embroidered upon it….

From Widdershins by Onions, Oliver [pseud.]