== Questions about p-values, significance or power of tests ==

 1. [http://www.childrens-mercy.org/stats/ask/tail.asp When and how do I evaluate a one-sided p-value?]

 1. [:FAQ/Power: Sample sizes for a given power for testing if a correlation equals zero] 

 1. [:FAQ/PRsq: Sample sizes for a given power for testing if R-squared in a one-way anova is zero] 

 1. [:FAQ/effectSize: A guide to magnitudes of effect sizes]

 1. [:FAQ/prep: Problems using p-rep, the Probability of Replication]

 1. [:FAQ/dunlap: A quick guide to choice of sample sizes for Cohen's effect sizes]

 1. [:FAQ/comparezt:A note on comparing z and t statistics and their p-values?]

 1. [:FAQ/td: How do I convert a t-statistic into an effect size?]

 1. [:FAQ/cd: How do I compute Cohen's d in SPSS?]

 1. [:FAQ/effcis: A guide to obtaining confidence intervals for effect sizes]

 1. [:FAQ/Escomp: How do I compute effect sizes?]

 1. [:FAQ/power:How do I do power calculations in SPSS, R, EXCEL and using web freeware?]

 1. [:FAQ/equival:How do I compute statistical tests of equivalence?]

 1. [:FAQ/SPSSpow:Computing Power for ANOVAs using the SPSS GLM procedure]

 1. [attachment:MANpow.pdf Computing Power for ANOVAs using the SPSS MANOVA procedure]

 1. [:FAQ/FDR:How do I do False Discovery Rate (FDR) corrections for multiple tests?] 

 1. [:FAQ/Bayes:How do I calculate and interpret conditional probabilities?]

 1. [:FAQ/pvalsdef:What is a p-value?]

 1. [:FAQ/pvalues:How do I find p-values using critical values as input in SPSS and EXCEL?]

 1. [:FAQ/SpssBonferroni:Adjusted p-values]

 1. [:FAQ/CombiningPvalues:Combining p-values by Fisher's and Stouffer's methods]

 1. [:FAQ/CombiningZandT:Summing z values and summing t-values]

 1. [:FAQ/Fdfs:Why does the value of one in the F distribution have a p-value which is less than 1?]