In statistical significance testing, a one-tailed test and a two-tailed test are alternative ways of computing the statistical significance of a parameter...

two-tailed p-values can be calculated as Φ(Z)(for lower/left-tailed tests), Φ(−Z) (for upper/right-tailed tests) and 2Φ(−|Z|) (for two-tailed tests) where...

Omnibus test One- and two-tailed tests One-class classification One-factor-at-a-time method One-tailed test – redirects to One- and two-tailed tests One-way...

Directed tests combine the attributes of one-tailed and two-tailed tests. "...directed tests should be used in virtually all applications where one-sided...

the one-tailed test above. In order to consider both the biases, we use a two-tailed test. Note that to do this we cannot simply double the one-tailed p-value...

location test of the null hypothesis such that the means of two populations are equal. All such tests are usually called Student's t-tests, though strictly...

the results of the tail flick test and it is important to consider this effect when performing the test. Lastly, many thermal tests do not distinguish...

the revised test statistic T−50. Using one of these sampling distributions, it is possible to compute either a one-tailed or two-tailed p-value for the...

t-distribution to test one of two possible null hypotheses: that the two population means are equal, in which a two-tailed test is applied; or that one of the population...

between hind leg length and foreleg length. This is a two-tailed test, rather than a one-tailed test. For the two tailed test, the alternative hypothesis...