Questions tagged [two-tailed-test]
4 questions
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A specific example of two-sided chi-squared test
First of all I have read the answers to this question, but I'm not happy with them, I feel that they miss the point that I'm willing to address here.
I'm looking at a chi-squared test for independence of two dichotomous variables. Let's say the…

Arnaud Mortier
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How to calculate/interpret P-value in one versus two-tailed tests?
I am conducting an ordinal logistic regression and my alternative hypothesis is one-directional (I predict that my independent variable positively affects my dependent variable) and my null hypothesis is that my independent variable does not…

Joey
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How to find the Chisq values for a two tailed test in R?
How do we find the chisq value for a two tailed test?
For left tail we use qchisq(x,df,lower.tail="True")
For right tail we use qchisq(x,df,lower.tail="False")
What about two tailed?
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Compute the P-value of a two-tailed test
I am doing a two-tailed test, and the null distribution is a Gamma distribution $\Gamma(a,b)$. Let's say my test statistic is $R$. If I were to do a left tail test, then the P-value is computed as $P(R

Toney Shields
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