Diff for "FAQ/distFAQ" - CBU statistics Wiki
location: Diff for "FAQ/distFAQ"
Differences between revisions 1 and 39 (spanning 38 versions)
⇤ ← Revision 1 as of 2006-09-29 13:13:05 →
Size: 684
Editor: PeterWatson
Comment:
← Revision 39 as of 2010-08-19 14:02:28 → ⇥
Size: 2670
Editor: PeterWatson
Comment:
Deletions are marked like this. Additions are marked like this.
Line 1: Line 1:
== Questions about distributions of random variables ==
Line 2: Line 3:
== Questions aboit distributions of random variables ==  1. [:FAQ/cis:A note on comparing confidence intervals and statistical significance]
Line 4: Line 5:
 1. [:FAQ/FVars: What is the variance of the mean of my transformed data?]  1. [:FAQ/poolse:How do I obtain a pooled standard error of the mean?]

 1. [:FAQ/semsd:How do I obtain the standard deviation from the standard error of the mean (s.e.m.)?]

 1. [:FAQ/FVars: What is the variance of the mean of my transformed data and the variance of combinations of means?]

 1. [:FAQ/eorder: A quick approximation for Normally distributed expected order statistics]

 1. [:FAQ/subscale: How do I derive an expected total for a subset of items based on the expected overall total?]
Line 12: Line 21:
 1. [:FAQ/Winsor:Methods of handling outliers.]
Line 14: Line 25:
 1. [:FAQ/percentile: How do I compute percentile thresholds for exponential data?]  1. [:FAQ/mixtures: How do I obtain parameter estimates for finite Normal mixture distributions using SPSS and BMDP?]
Line 16: Line 27:
 1. [:FAQ/MeanSum:How do I obtain the mean of several variables, each minus the same constant?]  1. [:FAQ/perc: How do I find out how many people have a score above a certain value?]
Line 18: Line 29:
 1. [:FAQ/percentile: How do I compute percentile thresholds for exponential data and use in outlier detection?]

 1. [:FAQ/rand: How do I generate a random sample in EXCEL?]

 1. [:FAQ/MeanSum:How do I obtain the mean of several variables, each minus the same constant? (In SPSS)]

 1. [:FAQ/zscore:How do I compute z-scores in SPSS?]

 1. [:FAQ/signt:Why does my t-statistic have a negative sign?]

 1. [:FAQ/pvals:How do I use cumulative distribution functions to compute p-values in SPSS, EXCEL and R?]

 1. [:FAQ/surv:How do I adjust for age in comparing survival times in two different groups?]

 1. [:FAQ/t1t2:What is the relationship between intercept and slope for scores at two time points?]

 1. [:FAQ/atan:Arctan functions in EXCEL.]

 1. [:FAQ/cdfs: How do I obtain statistical distributions in MATLAB?]

 1. [:FAQ/gamma:How do I produce random variables which follow a negative skew distribution?]

 1. [:FAQ/multinorm: How do I calculate probabilities involving the multivariate normal distribution?]

 1. [:FAQ/boot: Simulations sampling from data with replacement (bootstrapping)]
  
 1. [:FAQ/secretS: Bootstrapping without replacement (Secret Santa) in R]

 1. [:FAQ/mvngen: Generating multivariate data with a required correlation matrix]

 1. [:FAQ/formulae: How do I obtain the formulae behind statistics outputted by SPSS algorithms?]

Questions about distributions of random variables

  1. [:FAQ/cis:A note on comparing confidence intervals and statistical significance]
  2. [:FAQ/poolse:How do I obtain a pooled standard error of the mean?]
  3. [:FAQ/semsd:How do I obtain the standard deviation from the standard error of the mean (s.e.m.)?]
  4. [:FAQ/FVars: What is the variance of the mean of my transformed data and the variance of combinations of means?]
  5. [:FAQ/eorder: A quick approximation for Normally distributed expected order statistics]
  6. [:FAQ/subscale: How do I derive an expected total for a subset of items based on the expected overall total?]

  7. [:FAQ/ResidualsNonNormality:Residuals and (Non-)Normality]

  8. [:FAQ/ResidsRepMeas:How do I check Normality assumptions in repeated measures analyses in SPSS?]

  9. [:FAQ/Simon:Testing normality including rules of thumb for skew, kurtosis in SPSS]

  10. [:FAQ/Winsor:Methods of handling outliers.]

  11. [:FAQ/EXponential: How do I produce truncated exponential random variables using MATLAB?]
  12. [:FAQ/mixtures: How do I obtain parameter estimates for finite Normal mixture distributions using SPSS and BMDP?]
  13. [:FAQ/perc: How do I find out how many people have a score above a certain value?]
  14. [:FAQ/percentile: How do I compute percentile thresholds for exponential data and use in outlier detection?]
  15. [:FAQ/rand: How do I generate a random sample in EXCEL?]

  16. [:FAQ/MeanSum:How do I obtain the mean of several variables, each minus the same constant? (In SPSS)]

  17. [:FAQ/zscore:How do I compute z-scores in SPSS?]
  18. [:FAQ/signt:Why does my t-statistic have a negative sign?]
  19. [:FAQ/pvals:How do I use cumulative distribution functions to compute p-values in SPSS, EXCEL and R?]
  20. [:FAQ/surv:How do I adjust for age in comparing survival times in two different groups?]
  21. [:FAQ/t1t2:What is the relationship between intercept and slope for scores at two time points?]
  22. [:FAQ/atan:Arctan functions in EXCEL.]
  23. [:FAQ/cdfs: How do I obtain statistical distributions in MATLAB?]
  24. [:FAQ/gamma:How do I produce random variables which follow a negative skew distribution?]
  25. [:FAQ/multinorm: How do I calculate probabilities involving the multivariate normal distribution?]
  26. [:FAQ/boot: Simulations sampling from data with replacement (bootstrapping)]
  27. [:FAQ/secretS: Bootstrapping without replacement (Secret Santa) in R]
  28. [:FAQ/mvngen: Generating multivariate data with a required correlation matrix]
  29. [:FAQ/formulae: How do I obtain the formulae behind statistics outputted by SPSS algorithms?]

None: FAQ/distFAQ (last edited 2020-03-03 12:05:14 by PeterWatson)