two-tailed test


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two-tailed test

[′tü ‚tāld ‚test]
(statistics)
A statistical test in which the critical region consists of those values of a test statistic less than a given value as well as those values greater than another given value. Also known as two-tail test.
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The two-tailed test was used because there was no prediction about the direction of relation between the variables have been tested.
05 significance level p-value for two-tailed test Couple of variables N of Percentage Z p-value valid NAa < Nab Difference NA & NA 118 59.
The change from a two-tailed test to a one-tailed test, however, must be based on prior research to indicate the predicted directionality of the results, which is impossible without sufficient literature.
0061 for two-tailed tests The two variables are positively correlated.
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.
The control variables for academic ability, ACT>25, and academic success, CUMGPA, were negative and significant at the one percent level in a two-tailed test.
17) The treatment effect would not be significant based on a two-tailed test either.
If we reject the null hypothesis for both very large and very small values of the sample result, the test is a two-tailed test.
The results in Table 3 indicate that the estimated coefficient of DMAT is positive and significant at the 10% level under a two-tailed test.
Chi-square tests were preplanned to test the difference between positive and negative attitudes for each questionnaire, with the test being one-tailed for the numerical questionnaire in the light of the results from the article published before and a two-tailed test for the verbal questionnaire because this was a new, more exploratory test.