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One-Tailed Test
A statistical test in which the critical area of a distribution is one-sided so that it is either greater than or less than a certain value, but not both. If the sample that is being tested falls into the one-sided critical area, the alternative hypo... More »

One- and two-tailed tests


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

FAQ: What are the differences between one-tailed and two-tailed tests


Because the one-tailed test provides more power to detect an effect, you may be tempted to use a one-tailed test whenever you have a hypothesis about the ...

The Difference Between One-Tailed & Two-Tailed Testing | Maxymiser


I'm not here to say a one-tailed test is inherently useless, but rather it is a risky point of confusion when understanding the validity of your testing campaigns and  ...

One-tailed and two-tailed tests | Hypothesis testing with one sample ...


You could have done a similar type of hypothesis test with; the same experiment where you only had a one-tailed test. And the way we could have done that is ...

One-Tailed Test Definition | Investopedia


The one-tailed test gets its name from testing the area under one of the tails ( sides) of a normal distribution, although the test can be used in other non-normal  ...

One-Tailed Test: Definition - Stat Trek


Definition of one-tailed test, from the Stat Trek dictionary of statistical terms and concepts. This statistics glossary includes definitions of all technical terms used ...

One-tailed | Definition of one-tailed by Merriam-Webster


being a statistical test for which the critical region consists of all values of the test statistic greater than a given value or less than a given value but not both ...

significance test - power analysis - Power and Precision


A one-tailed test is a test that will be interpreted only if the effect meets the criterion for significance and falls in the observed direction (i.e. the treatment improves ...

One tailed hypothesis tests.


Why would you want to use a one tailed test? To find out if the true parameter ( e.g., mean, proportion, difference in means, differences in proportions) is greater  ...

Popular Q&A
Q: What is one-tailed test?
A: ( ¦wən ¦tāld ′test ) (statistics) A statistical test in which the critical region consists of all values of a test statistic that are less than a given value or... Read More »
Source: www.answers.com
Q: What is a one-tailed test?
A: I am not sure I can answer all parts of the question, but here goes; 1. a. a one-tailed test is used when you are making predictions about a difference in a par... Read More »
Source: answers.yahoo.com
Q: A one-tailed test is a?
A: hypothesis test in which the rejection region is in one tail of the sampling distribution. a one-tailed test is either H0: u >u0 or H0 < u0 which it is either l... Read More »
Source: answers.yahoo.com
Q: When is it valid to use a one-tailed test?
A: A one-tailed test should be used only in a study in which an effect in the unexpected direction is functionally equivalent to no effect. It is not appropriate t... Read More »
Source: wiki.answers.com
Q: When do you reject the null in a one-tailed test?
A: In statistical hypothesis testing, there are two types of errors Read More »
Source: www.chacha.com