FAQ/powerFAQ - CBU statistics Wiki

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Revision 48 as of 2010-07-22 12:09:33

location: FAQ / powerFAQ

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: Sample sizes for a given power for testing if a correlation equals zero]
  3. [:FAQ/PRsq: Sample sizes for a given power for testing if R-squared in a one-way anova is zero]
  4. [:FAQ/effectSize: A guide to magnitudes of effect sizes]
  5. [:FAQ/prep: Problems using p-rep, the Probability of Replication]
  6. [:FAQ/dunlap: A quick guide to choice of sample sizes for Cohen's effect sizes]
  7. [:FAQ/comparezt:A note on comparing z and t statistics and their p-values?]
  8. [:FAQ/td: How do I convert a t-statistic into an effect size?]
  9. [:FAQ/cd: How do I compute Cohen's d in SPSS?]
  10. [:FAQ/effcis: A guide to obtaining confidence intervals for effect sizes]
  11. [:FAQ/Escomp: How do I compute effect sizes?]
  12. [:FAQ/power:How do I do power calculations in SPSS, R, EXCEL and using web freeware?]
  13. [:FAQ/equival:How do I compute statistical tests of equivalence?]
  14. [:FAQ/SPSSpow:Computing Power for ANOVAs using the SPSS GLM procedure]

  15. [attachment:MANpow.pdf Computing Power for ANOVAs using the SPSS MANOVA procedure]
  16. [:FAQ/FDR:How do I do False Discovery Rate (FDR) corrections for multiple tests?]

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

  18. [:FAQ/pvalsdef:What is a p-value?]
  19. [:FAQ/pvalues:How do I find p-values using critical values as input in SPSS and EXCEL?]
  20. [:FAQ/SpssBonferroni:Adjusted p-values]

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

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

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