FAQ/powerFAQ - CBU statistics Wiki

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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?]

  2. [:FAQ/Power: Power calculations for testing if correlations equal zero]
  3. [:FAQ/effectSize: A guide to magnitudes of effect sizes]
  4. [attachment:prep.pdf Problems using p-rep, the Probability of Replication]
  5. [:FAQ/dunlap: A quick guide to choice of sample sizes for Cohen's effect sizes]
  6. [:FAQ/td: How do I convert a t-statistic into an effect size?]
  7. [:FAQ/cd: How do I compute Cohen's d in SPSS?]
  8. [:FAQ/effcis: A guide to obtaining confidence intervals for effect sizes]
  9. [:FAQ/Escomp: How do I compute effect sizes?]
  10. [:FAQ/power:How do I do power calculations in SPSS, R and EXCEL?]
  11. [:FAQ/equival:How do I compute statistical tests of equivalence?]

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

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

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

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

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

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

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

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

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