Sacha Epskamp

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bio website sachaepskamp.com
location Amsterdam, The Netherlands
age 28
visits member for 2 years, 3 months
seen May 14 at 10:34
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I am a graduate student and research assistant in psychological methods at the University of Amsterdam. I am mainly developping the R-package qgraph:

https://sites.google.com/site/qgraphproject


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Mar
31
 answered How do you draw structural equation/MPLUS models?
Mar
8
 comment Is there a test in R whose null hypothesis is that there is a difference between the means of two populations?
Here are a few references: ejwagenmakers.com/2009/WetzelsEtAl2009Ttest.pdf, ejwagenmakers.com/2010/WagenmakersEtAlCogPsy2010.pdf
Mar
8
 answered Is there a test in R whose null hypothesis is that there is a difference between the means of two populations?
Feb
7
 awarded  Yearling
Jan
24
 awarded  Nice Question
Dec
21
 comment Fitting to data with a Bernoulli (I think) distribution
Wouldn't $y$ have the distribution ${n \choose k} \theta^y (1 - \theta)^{n-y}$ if $y = \sum_{i=1}^n x_i$
Dec
21
 answered Fitting to data with a Bernoulli (I think) distribution
Aug
13
 comment How to test hypothesis that correlation is equal to given value using R?
The question "is there a function to compute the p-value for cor=0.75?" has nothing to do with programming. It is a statistical question.
Aug
13
 comment How to test hypothesis that correlation is equal to given value using R?
This question is better suited for crossvalidated.com
Jun
7
 awarded  Commentator
Jun
7
 comment Which measure of model fit to report when performing likelihood based regression: AIC, BIC, Pseudo R-square?
Probably depends heavily on the field and journal you are interested in.
Jun
7
 awarded  Scholar
Jun
7
 accepted R only alternatives to BUGS
Jun
6
 asked R only alternatives to BUGS
Jun
6
 comment Is there an R package with a pretty function that can deal effectively with outliers?
or mark them as NA: foo[foo == 999999999] <- NA
May
31
 comment Internet statistics resources suitable for psychology students doing research
Very nice, thanks
May
31
 comment Internet statistics resources suitable for psychology students doing research
Thanks, wanted to make it CW myself but don't have enough rep yet here:)
May
31
 comment Internet statistics resources suitable for psychology students doing research
Mainly students doing their research projects.
May
31
 asked Internet statistics resources suitable for psychology students doing research
May
30
 awarded  Student
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