Questions about p-values, significance or power of tests
When and how do I evaluate a one-sided p-value and quote a one-sided 95% confidence interval?
What sample sizes do I need for doing tests with a given power?
A quick guide to choice of sample sizes for Cohen's effect sizes
How do I convert a t-statistic (and an Odds Ratio) into an effect size?
How do I compute Cohen's d in SPSS and EXCEL and its and eta-squared confidence interval in SPSS, R or EXCEL?
How do I compute effect sizes (including variance adjusted ones)?
How do I do power calculations in SPSS, R, EXCEL and using web freeware?
How do I do power (sample size) calculations on Poisson counts?
How do I do power calculations using formulae for one sample t and sign tests?
How do I work out sample size for apriori specificities and sensitivities?
How do I do False Discovery Rate (FDR) corrections for multiple tests?
How do I find p-values using critical values as input in SPSS and EXCEL?
How do I adjust p-values for number of comparisons using SPSS and R?
Why does the value of one in the F distribution have a p-value which is less than 1?