User Henrik

157 votes

What is your favorite "data analysis" cartoon?

answered Apr 6, 2011 at 8:35

95 votes

What is your favorite "data analysis" cartoon?

answered Sep 1, 2010 at 15:02

57 votes

Famous statistical quotations

answered Jul 27, 2010 at 14:03

57 votes

What is your favorite "data analysis" cartoon?

answered May 5, 2011 at 9:27

41 votes

Accepted

When conducting a t-test why would one prefer to assume (or test for) equal variances rather than always use a Welch approximation of the df?

answered Jul 27, 2010 at 15:14

40 votes

Accepted

How to represent an unbounded variable as number between 0 and 1

answered Aug 2, 2010 at 14:56

38 votes

Regarding p-values, why 1% and 5%? Why not 6% or 10%?

answered Apr 10, 2013 at 10:48

34 votes

Accepted

What is the minimum recommended number of groups for a random effects factor?

answered Sep 20, 2012 at 12:35

27 votes

Accepted

Example reports for mixed-model analysis using lmer in biology, psychology and medicine?

answered Apr 20, 2012 at 22:48

23 votes

Post-hocs for within subjects tests?

answered Jul 27, 2010 at 10:24

21 votes

Accepted

Post hoc test after ANOVA with repeated measures using R

answered Aug 11, 2011 at 8:55

20 votes

How do you "control" for a factor/variable?

answered Dec 17, 2013 at 17:48

19 votes

If the t-test and the ANOVA for two groups are equivalent, why aren't their assumptions equivalent?

answered Aug 13, 2010 at 12:24

19 votes

Accepted

Can you say that statistics and probability is like induction and deduction?

answered Oct 27, 2010 at 8:28

18 votes

Accepted

How to perform a 4 by 4 mixed ANOVA with between- and within-subjects contrasts using R?

answered Sep 14, 2011 at 8:59

18 votes

Accepted

How to display error bars for cross-over (paired) experiments

answered Jun 3, 2013 at 21:38

17 votes

How to test hypothesis of no group differences?

answered Sep 24, 2010 at 11:39

17 votes

What is a "saturated" model?

answered Jul 27, 2010 at 11:56

16 votes

Accepted

How do I vertically stack two graphs with the same x scale, but a different y scale in R?

answered Aug 18, 2010 at 15:43

15 votes

Is normality testing 'essentially useless'?

answered Sep 9, 2010 at 8:59

14 votes

Accepted

Is there an alternative to the Kolmogorov-Smirnov test for tied data with correction?

answered Sep 3, 2012 at 14:35

13 votes

Whether to use structural equation modelling to analyse observational studies in psychology

answered May 27, 2011 at 8:08

13 votes

Accepted

Measures of model complexity

answered Sep 20, 2010 at 8:40

13 votes

What are the differences between Factor Analysis and Principal Component Analysis?

answered Apr 21, 2014 at 20:06

13 votes

How to choose random- and fixed-effects structure in linear mixed models?

answered Jan 2, 2015 at 20:35

13 votes

Accepted

Encoding of categorical variables (dummy vs. effects coding) in mixed models

answered Jan 15, 2018 at 10:34

12 votes

Finding the column index by its name in R

answered Apr 25, 2011 at 10:02

12 votes

Is there a way to maximize/minimize a custom function in R?

answered Jul 1, 2011 at 7:59

11 votes

Accepted

Good resource to understand ANOVA and ANCOVA?

answered Sep 17, 2010 at 8:43

11 votes

Interpreting three forms of a "mixed model"

answered Oct 1, 2012 at 11:29

Stack Exchange Network

131 Answers

What is your favorite "data analysis" cartoon?

What is your favorite "data analysis" cartoon?

Famous statistical quotations

What is your favorite "data analysis" cartoon?

When conducting a t-test why would one prefer to assume (or test for) equal variances rather than always use a Welch approximation of the df?

How to represent an unbounded variable as number between 0 and 1

Regarding p-values, why 1% and 5%? Why not 6% or 10%?

What is the minimum recommended number of groups for a random effects factor?

Example reports for mixed-model analysis using lmer in biology, psychology and medicine?

Post-hocs for within subjects tests?

Post hoc test after ANOVA with repeated measures using R

How do you "control" for a factor/variable?

If the t-test and the ANOVA for two groups are equivalent, why aren't their assumptions equivalent?

Can you say that statistics and probability is like induction and deduction?

How to perform a 4 by 4 mixed ANOVA with between- and within-subjects contrasts using R?

How to display error bars for cross-over (paired) experiments

How to test hypothesis of no group differences?

What is a "saturated" model?

How do I vertically stack two graphs with the same x scale, but a different y scale in R?

Is normality testing 'essentially useless'?

Is there an alternative to the Kolmogorov-Smirnov test for tied data with correction?

Whether to use structural equation modelling to analyse observational studies in psychology

Measures of model complexity

What are the differences between Factor Analysis and Principal Component Analysis?

How to choose random- and fixed-effects structure in linear mixed models?

Encoding of categorical variables (dummy vs. effects coding) in mixed models

Finding the column index by its name in R

Is there a way to maximize/minimize a custom function in R?

Good resource to understand ANOVA and ANCOVA?

Interpreting three forms of a "mixed model"