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EJ

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EJ
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  • Right now this is not possible. Of course the graph allows the user to try out some values near the threshold, but it is not autimatized. This would be a good feature request for our GitHub page. E.J.
    in Robustness regions Comment by EJ August 2022
  • This should be easy to figure out with generated data (for instance using the Distribution module). But perhaps we should clarify this. I'll ask the team.
    in Kurtosis in JASP - proper or excess value? Comment by EJ August 2022
  • Hi Daniela, I'm forwarding your email, but the person in charge of this analysis has just gone on vacation so responding might be a little more slow. E.J.
    in contrast effect size calculate Comment by EJ August 2022
  • Dear Laura, I am referring to resampling itself. I do realize the resampling is handy in the present context, because otherwise you need some sort of complicated time series model (which will almost certainly be misspecified). This is definitely int…
    in Jackknifing & Bayesian rmANOVA Comment by EJ July 2022
  • Dear AstralWolf, This is because the ANOVA scenario is more complex. But maybe something is possible here. A good feature question for our GitHub page! Cheers, E.J.
    in How to display (i)Bayes robustness check plot and (ii)Sequential Analysis for ANOVA? Comment by EJ July 2022
  • Hi Laura The jackknife is a resampling technique, right? When you're doing a Bayesian analysis that is not needed. But I guess I should look up the Kiesel paper... Cheers, E.J.
    in Jackknifing & Bayesian rmANOVA Comment by EJ July 2022
  • That would be very welcome -- I'll check E.J.
    in JAGS output from JASP Comment by EJ July 2022
  • I'll ask the team
    in T-stat in Conover´s post-hoc following Friedman´s test? Comment by EJ July 2022
  • Hello buzziol, We're working hard to make it easier to obtain the R code underlying the computations. This is work in progress, but it is our main goal for the near future. Cheers, E.J.
    in Quality Control module Comment by EJ July 2022
  • Thanks. Yes but I think a lot of people will cite papers instead of software, especially since we have papers about the software :-)
    in JASP 0.17 Comment by EJ July 2022
  • Hi Joshua, From your description it seems you want to conduct a *paired* samples t-test (each species is tallied in two areas, and I suppose you want to test whether the one area has more bees than another area?). So then you simply select the paire…
    in Number of factor levels is not equal to 2 Comment by EJ July 2022
  • Hi Peter, We'll have JASP 1.0 once the data-editing and R syntax are included -- we are working hard on both projects. Wrt the seriousness, I guess the question is motivated by the fact that JASP is so user-friendly :-) Anyway, yes, JASP is very ser…
    in JASP 0.17 Comment by EJ July 2022
  • Hi Per, We're aiming for another release with new functionality end of September, with the 0.17 hopefully soon after. Cheers, E.J.
    in JASP 0.17 Comment by EJ July 2022
  • You can check out the release notes or the associated blog posts: https://jasp-stats.org/2022/04/19/introducing-jasp-0-16-2-performance-improvements-apple-silicon-and-bug-fixes/ and https://jasp-stats.org/2022/06/16/introducing-jasp-0-16-3-quality-c…
    in JASP 0.16.3.0 Comment by EJ June 2022
  • Dear Vasileia, The ANOVA is usually robust to violations of normality. Specifically, this paper (https://link.springer.com/article/10.3758/s13428-017-0918-2) suggests that when the min vs max variance ratio < 1.5, the results should be robust. Of…
    in Data analysis Comment by EJ June 2022
  • Hi bdgp9636, With "proper" do you mean "robust"? And did you have a specific procedure in mind? Are you doing the classical meta-analysis or the Bayesian meta-analysis? Cheers, E.J.
    in Sensitivity analysis in Meta analysis Comment by EJ June 2022
  • I think this would be a good feature request! Cheers, E.J.
    in How to merge data sets in JASP Comment by EJ June 2022
  • Hi Stanislaw, I'll ask around. If it crashes R, it will crash JASP. But I am not sure whether it will work in R but not in JASP... Cheers, E.J.
    in Big data set Comment by EJ June 2022
  • Hi Michael, Thanks for this interesting question. My two cents: Yes your summary is adequate. Note that the problems originate because the models are misspecified. In general, when the models are badly misspecified, all sorts of statistical havoc ma…
    in Optional stopping problems - paper by de Heide & Grünwald (2021) Comment by EJ June 2022
  • When you do any inference on time series data, it is important to take into account the autocorrelation. With high autocorrelation you effectively have much less than N independent observations. Currently we don't really offer tests for autocorrelat…
    in lstm Comment by EJ June 2022
  • Yes, but Koen, isn't it worrying that the results would differ a lot depending on the seed?
    in Machine learning Comment by EJ June 2022
  • How different are the results? Most of ML is based on resampling algorithms so results are expected to differ -- but if they differ by a lot than this would be surprising to me. E.J.
    in Machine learning Comment by EJ June 2022
  • So you want to divide by N instead of N-1, is that what you mean? If I'm not mistaken you can take the SD from JASP, multiply by [sqrt(1/N) / sqrt(1/(N-1))] and you should get the result you want. I did this very quickly though, so best to check! A…
    in Standard deviation of the population (rather than sample)? Comment by EJ June 2022
  • The method for correction can be the same as that applied for post-hoc tests in ANOVA. See the thesis by Tim de Jong for details: https://psyarxiv.com/s56mk Cheers, E.J.
    in Accounting for multiple comparisons - Bayesian t-tests Comment by EJ June 2022
  • Hi Ana, I'm sure you can put everything in a single model, but I'd keep things simple and conduct two separate analyses. Cheers, E.J.
    in Linear mixed-effects models to compare a within-between factor Comment by EJ June 2022
  • We'll soon (this week, hopefully) preprint a paper in which we outline a problem with the currently standard way of specifying RM models in BayesFactor.
    in Model averaging effects from the BayesFactor output. Comment by EJ June 2022
  • Hi Marthapapa, I'm afraid that I have never used circular statistics myself. I think I can only advise you to talk with an expert for this particular analysis (it was a contributed module, so the other JASP team members are not experts either I thin…
    in circular statistics Comment by EJ June 2022
  • Hi Marijn, This is not yet possible. Well, I guess with some categorical variables it would be an ANCOVA... Cheers, E.J.
    in Categorical vars in Bayesian regression Comment by EJ June 2022
  • Yes, so Richard confirms that it would just be an unbalanced design in that case, which the Bayesian model handles.
    in repeated measure ANOVA - missing data & multiple-groups Comment by EJ May 2022
  • The BayesFactor models are in fact linear mixed models. Let me get confirmation from Richard, also on the missing data aspect.
    in repeated measure ANOVA - missing data & multiple-groups Comment by EJ May 2022
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