Stack Exchange

Henrik

Zürich, Switzerland

http://singmann.org

Postdoc (Psychology) at the University of Zürich, Switzerland.

My primary programming language is R.
I am maintainer of R packages afex, MPTinR, and acss.

Besides R, I use Python for running experiments (using PsychoPy) and occasionally other languages.

A list of my publications can be found on my homepage (usually with possibility to download the papers, data, and analysis scripts).

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Top Questions
194 votes

Plot a legend outside of the plotting area in base graphics?

r plot legend asked Oct 14 '10 at 10:01
stackoverflow.com

91 votes

What is the most pythonic way to pop a random element from a list?

python list random asked Apr 6 '12 at 19:08
stackoverflow.com

74 votes

What are the possible dimensions / sizes / units LaTeX understands?

dimensions units unit-of-measure dimension-expressions asked Jan 17 '12 at 14:27
tex.stackexchange.com

69 votes

How to efficiently use Rprof in R?

r profiling profiler asked Sep 6 '10 at 10:50
stackoverflow.com

63 votes

Does it make sense to add a quadratic term but not the linear term to a model?

regression polynomial asked May 18 '12 at 13:34
stats.stackexchange.com

62 votes

Which pseudo-$R^2$ measure is the one to report for logistic regression (Cox & Snell or Nagelkerke)?

logistic goodness-of-fit r-squared asked Oct 13 '10 at 16:12
stats.stackexchange.com

57 votes

Which permutation test implementation in R to use instead of t-tests (paired and non-paired)?

r t-test nonparametric permutation-test asked Jan 10 '11 at 12:10
stats.stackexchange.com

37 votes

What is compound symmetry in plain english?

correlation anova mixed-model lme asked Sep 2 '11 at 8:42
stats.stackexchange.com

37 votes

Is there a way to use two '…' statements in a function in R?

function r argument-passing optional-arguments asked Nov 8 '10 at 14:49
stackoverflow.com

33 votes

Maximal Length of List to Shuffle with Python random.shuffle?

python random shuffle asked Jun 17 '10 at 14:48
stackoverflow.com

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Top Answers
138
What is your favorite “data analysis” cartoon?
stats.stackexchange.com

109
Get column index from label in a data frame
stackoverflow.com

95
Change the spacing of tick marks on the axis of a plot?
stackoverflow.com

92
What is your favorite “data analysis” cartoon?
stats.stackexchange.com

54
What is your favorite “data analysis” cartoon?
stats.stackexchange.com

51
How to efficiently use Rprof in R?
stackoverflow.com

47
How to read in numbers with a comma as decimal separator?
stackoverflow.com

46
Famous statistical quotations
stats.stackexchange.com

36
Regarding p-values, why 1% and 5%? Why not 6% or 10%?
stats.stackexchange.com

36
How to represent an unbounded variable as number between 0 and 1
stats.stackexchange.com

36
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?
stats.stackexchange.com

26
Example reports for mixed-model analysis using lmer in biology, psychology and medicine?
stats.stackexchange.com

24
Will declining a research award be problematic for me, or other people?
academia.stackexchange.com

24
What is the minimum recommended number of groups for a random effects factor?
stats.stackexchange.com

23
Passing column name as parameter to function in R language
stackoverflow.com

22
Post-hocs for within subjects tests?
stats.stackexchange.com

21
Post hoc test after ANOVA with repeated measures using R
stats.stackexchange.com

20
igraph axes xlim ylim plot incorrectly
stackoverflow.com

19
psych - Getting factor loadings as data.frame for LaTeX export
stackoverflow.com

18
How to perform a 4 by 4 mixed ANOVA with between- and within-subjects contrasts using R?
stats.stackexchange.com

18
If the t-test and the ANOVA for two groups are equivalent, why aren't their assumptions equivalent?
stats.stackexchange.com

17
What is a “saturated” model?
stats.stackexchange.com

17
How to display error bars for cross-over (paired) experiments
stats.stackexchange.com

16
How do you “control” for a factor/variable?
stats.stackexchange.com

16
How do Rpy2, pyrserve and PypeR compare?
stackoverflow.com

16
How to test hypothesis of no group differences?
stats.stackexchange.com

16
Can you say that statistics and probability is like induction and deduction?
stats.stackexchange.com

15
How do I vertically stack two graphs with the same x scale, but a different y scale in R?
stats.stackexchange.com

14
Is there an alternative to the Kolmogorov-Smirnov test for tied data with correction?
stats.stackexchange.com

13
Is normality testing 'essentially useless'?
stats.stackexchange.com

1 2 3 4