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One- and two-tailed tests

en.wikipedia.org/wiki/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 ...

One-Tailed Test: Definition - Stat Trek

stattrek.com/statistics/dictionary.aspx?definition=One_tailed_test

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 Test Definition | Investopedia

www.investopedia.com/terms/o/one-tailed-test.asp

A one-tailed test is 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.

One-tailed and two-tailed tests - The Analysis Factor

www.theanalysisfactor.com/one-tailed-and-two-tailed-tests/

Tagged as: F test, hypothesis testing, One-tailed test, T test, Two-tailed test, Z test ... I have used a one-tailed test but the effect went into the opposite direction.

Stata | FAQ: One-sided tests for coefficients

www.stata.com/support/faqs/statistics/one-sided-tests-for-coefficients/

The results from estimation commands display only two-sided tests for the coefficients. How can I perform a one-sided test?

Chapter 7: Hypothesis Testing - Kennesaw State University

science.kennesaw.edu/~jdemaio/1107/hypothesis_testing.htm

Ha: m 2.73. A one-tailed test is one where Ha is directional and includes < or >. or ... What is the critical value for a one-tailed test and a 95% level of confidence?

Test of hypothesis (one-tail)

www.cs.uni.edu/~campbell/stat/inf4.html

In this circumstance a one-tailed test is employed. The null hypothesis (H0) for a one tailed test is that the mean is greater (or less) than or equal to µ, and the ...

One-tailed and two-tailed tests | Khan Academy

www.khanacademy.org/math/statistics-probability/significance-tests-one-sample/tests-about-population-mean/v/one-tailed-and-two-tailed-tests

Now if we wanted to do a one-tailed test, but for some reason we already ... If you want to do one-tailed test, you could say that the drug lowers response time.

One Tailed Test or Two in Hypothesis Testing. How to Decide.

www.statisticshowto.com/one-tailed-test-or-two/

Nov 4, 2009 ... How to figure out if you have a one tailed test or two in hypothesis testing. Includes video. Free help forum, online calculators.

Why do we use a one-tailed test F-test in analysis of variance ...

stats.stackexchange.com/questions/67543/why-do-we-use-a-one-tailed-test-f-test-in-analysis-of-variance-anova

Aug 16, 2013 ... Can you give the reason for using a one tailed test in the analysis of variance test ? Why do we use a one-tail test - the F-test - in ANOVA?

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

www.ats.ucla.edu

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 ...

What is a one-tailed test? - PsychWiki - A Collaborative Psychology ...

www.psychwiki.com

Nov 18, 2010 ... One tailed test is a test of a directional hypothesis, where we have a ... the statistics book” statistically, the test would be called one-tailed test.

1- vs 2-Tailed Tests

www.chem.utoronto.ca

Because we were only interested in one side of the distribution, or one "tail", this type of test is called a one-sided or a one-tailed test. When you are using tables ...