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#pvalue

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Dr Mircea Zloteanu ☀️ 🌊🌴<p><a href="https://mastodon.social/tags/statstab" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>statstab</span></a> #378 Selective Inference: The Silent Killer of Replicability</p><p>Thoughts: Benjamin overviews the replicability crisis, alternatives to p-values (and their issues), and suggests selective reporting is a large issue itself.</p><p><a href="https://mastodon.social/tags/replication" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>replication</span></a> <a href="https://mastodon.social/tags/crisis" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>crisis</span></a> <a href="https://mastodon.social/tags/pvalue" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pvalue</span></a> <a href="https://mastodon.social/tags/nhst" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>nhst</span></a> <a href="https://mastodon.social/tags/selectivereporting" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>selectivereporting</span></a> <a href="https://mastodon.social/tags/replicability" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>replicability</span></a> <a href="https://mastodon.social/tags/reproducibility" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>reproducibility</span></a> </p><p><a href="https://hdsr.mitpress.mit.edu/pub/l39rpgyc/release/3" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">hdsr.mitpress.mit.edu/pub/l39r</span><span class="invisible">pgyc/release/3</span></a></p>
Dr Mircea Zloteanu ☀️ 🌊🌴<p><a href="https://mastodon.social/tags/statstab" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>statstab</span></a> #364 Distribution of Cohen's d, p-values, and power curves for an independent two-tailed t-test</p><p>Thoughts: Useful for explaining why we use 5% alpha and what power does to p-values.</p><p><a href="https://mastodon.social/tags/shiny" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>shiny</span></a> <a href="https://mastodon.social/tags/education" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>education</span></a> <a href="https://mastodon.social/tags/pvalue" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pvalue</span></a> <a href="https://mastodon.social/tags/power" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>power</span></a> <a href="https://mastodon.social/tags/simulation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>simulation</span></a> <a href="https://mastodon.social/tags/ttest" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ttest</span></a> <a href="https://mastodon.social/tags/cohend" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>cohend</span></a></p><p><a href="https://shinyapps.org/showapp.php?app=https://shiny.psy.lmu.de/felix/lakens_pcurve/&amp;by=Daniel%20Lakens&amp;title=P-value%20distribution%20and%20power%20curves%20for%20an%20independent%20two-tailed%20t-test&amp;shorttitle=P-value%20distribution%20and%20power%20curves" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">shinyapps.org/showapp.php?app=</span><span class="invisible">https://shiny.psy.lmu.de/felix/lakens_pcurve/&amp;by=Daniel%20Lakens&amp;title=P-value%20distribution%20and%20power%20curves%20for%20an%20independent%20two-tailed%20t-test&amp;shorttitle=P-value%20distribution%20and%20power%20curves</span></a></p>
Dr Mircea Zloteanu ☀️ 🌊🌴<p><a href="https://mastodon.social/tags/statstab" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>statstab</span></a> #363 p-checker The one-for-all p-value analyzer</p><p>Thoughts: Easy way to check for publication bias using some current tools.</p><p><a href="https://mastodon.social/tags/shiny" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>shiny</span></a> <a href="https://mastodon.social/tags/pvalue" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pvalue</span></a> <a href="https://mastodon.social/tags/phacking" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>phacking</span></a> <a href="https://mastodon.social/tags/QRPs" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>QRPs</span></a> <a href="https://mastodon.social/tags/zcurve" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>zcurve</span></a> <a href="https://mastodon.social/tags/bias" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>bias</span></a> <a href="https://mastodon.social/tags/pcurve" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pcurve</span></a> <a href="https://mastodon.social/tags/rindex" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>rindex</span></a></p><p><a href="https://shinyapps.org/apps/p-checker/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">shinyapps.org/apps/p-checker/</span><span class="invisible"></span></a></p>
Dr Mircea Zloteanu ☀️ 🌊🌴<p><a href="https://mastodon.social/tags/statstab" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>statstab</span></a> #362 When does a significant p-value indicate a true effect?</p><p>Understanding the Positive Predictive Value (PPV) of a p-value</p><p>Thoughts: Cool illustration of how assumptions impact our beliefs about the next study</p><p><a href="https://mastodon.social/tags/shiny" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>shiny</span></a> <a href="https://mastodon.social/tags/education" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>education</span></a> <a href="https://mastodon.social/tags/ppv" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ppv</span></a> <a href="https://mastodon.social/tags/pvalue" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pvalue</span></a></p><p><a href="https://shinyapps.org/showapp.php?app=https://shiny.psy.lmu.de/felix/PPV&amp;by=Michael%20Zehetleitner%20and%20Felix%20Sch%C3%B6nbrodt&amp;title=When%20does%20a%20significant%20p-value%20indicate%20a%20true%20effect?&amp;shorttitle=When%20does%20a%20significant%20p-value%20indicate%20a%20true%20effect" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">shinyapps.org/showapp.php?app=</span><span class="invisible">https://shiny.psy.lmu.de/felix/PPV&amp;by=Michael%20Zehetleitner%20and%20Felix%20Sch%C3%B6nbrodt&amp;title=When%20does%20a%20significant%20p-value%20indicate%20a%20true%20effect?&amp;shorttitle=When%20does%20a%20significant%20p-value%20indicate%20a%20true%20effect</span></a>?</p>
Dr Mircea Zloteanu ☀️ 🌊🌴<p><a href="https://mastodon.social/tags/statstab" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>statstab</span></a> #361 Vovk-Sellke Maximum p-Ratio (VS-MPR)</p><p>Thoughts: Can p-values provide evidence for H1 over H0? YES!*<br>(*if you make some assumptions and go a smidgen Bayesian)</p><p>VS-MPR is reported in <span class="h-card" translate="no"><a href="https://fosstodon.org/@JASPStats" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>JASPStats</span></a></span> </p><p><a href="https://mastodon.social/tags/vsmpr" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>vsmpr</span></a> <a href="https://mastodon.social/tags/pvalue" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pvalue</span></a> <a href="https://mastodon.social/tags/evidence" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>evidence</span></a> <a href="https://mastodon.social/tags/shiny" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>shiny</span></a> <a href="https://mastodon.social/tags/r" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>r</span></a> <a href="https://mastodon.social/tags/jasp" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>jasp</span></a></p><p><a href="https://www.shinyapps.org/apps/vs-mpr/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">shinyapps.org/apps/vs-mpr/</span><span class="invisible"></span></a></p>
Dr Mircea Zloteanu ☀️ 🌊🌴<p><a href="https://mastodon.social/tags/statstab" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>statstab</span></a> #346 Jeffreys-Lindley paradox</p><p>Thoughts: I like this short explanation of the "paradox" of why frequentist and bayesian inference can differ.</p><p><a href="https://mastodon.social/tags/paradox" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>paradox</span></a> <a href="https://mastodon.social/tags/frequentist" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>frequentist</span></a> <a href="https://mastodon.social/tags/bayesian" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>bayesian</span></a> <a href="https://mastodon.social/tags/inference" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>inference</span></a> <a href="https://mastodon.social/tags/bayesfactor" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>bayesfactor</span></a> <a href="https://mastodon.social/tags/pvalue" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pvalue</span></a> <a href="https://mastodon.social/tags/explanation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>explanation</span></a></p><p><a href="https://michael-franke.github.io/intro-data-analysis/jeffreys-lindley-paradox.html" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">michael-franke.github.io/intro</span><span class="invisible">-data-analysis/jeffreys-lindley-paradox.html</span></a></p>
Albert Cardona<p>For anyone still submitting biology papers with p-values:</p><p>"Estimation statistics should replace significance testing", Claridge-Chang and Assam, 2016<br><a href="https://www.nature.com/articles/nmeth.3729" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">nature.com/articles/nmeth.3729</span><span class="invisible"></span></a> (and also at <a href="https://zenodo.org/records/60156" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">zenodo.org/records/60156</span><span class="invisible"></span></a> ).</p><p><a href="https://mathstodon.xyz/tags/statistics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>statistics</span></a> <a href="https://mathstodon.xyz/tags/SignificanceTesting" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SignificanceTesting</span></a> <a href="https://mathstodon.xyz/tags/pvalue" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pvalue</span></a> <a href="https://mathstodon.xyz/tags/ScientificPublishing" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ScientificPublishing</span></a></p>
Bjørn Sætrevik<p>Imagine you preregistered study with tests A and B for a directed hypothesis H, but did not specify one-tailed or two-tailed testing. Test A is in the predicted direction, but p = between .05 and .09. Test B is in the non-predicted direction, but p &lt; .05. How do you report results?</p><p><a href="https://fediscience.org/tags/PreRegistration" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PreRegistration</span></a> <a href="https://fediscience.org/tags/OpenScience" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>OpenScience</span></a> <a href="https://fediscience.org/tags/NHST" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NHST</span></a> <a href="https://fediscience.org/tags/SignificanceTesting" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SignificanceTesting</span></a> <a href="https://fediscience.org/tags/pValue" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pValue</span></a></p>
Dr Mircea Zloteanu ☀️ 🌊🌴<p>New blogpost 🚨 : What do you do if you found a significant result, but your study was underpowered? How reliable is your finding? I discuss Type M and Type S error</p><p><a href="https://mzstats.blogspot.com/2023/02/what-not-to-do-with-non-null-results.html" rel="nofollow noopener" target="_blank"><span class="invisible">https://</span><span class="ellipsis">mzstats.blogspot.com/2023/02/w</span><span class="invisible">hat-not-to-do-with-non-null-results.html</span></a></p><p><a href="https://mastodon.social/tags/statistics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>statistics</span></a> <a href="https://mastodon.social/tags/frequentist" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>frequentist</span></a> <a href="https://mastodon.social/tags/NHST" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NHST</span></a> <a href="https://mastodon.social/tags/pvalue" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pvalue</span></a> <a href="https://mastodon.social/tags/sensitivityanalysis" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sensitivityanalysis</span></a> <a href="https://mastodon.social/tags/falsepositiverisk" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>falsepositiverisk</span></a> <a href="https://mastodon.social/tags/rstats" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>rstats</span></a></p>
デイヴ<p>The original <a href="https://mastodon.social/tags/metastudy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>metastudy</span></a> (coauthored by Stanford people, lest you think statistics quackery is the exclusive realm of second tier universities), after excluding self-reported data, and when looking at the time/length correlation for the European population, gets a p-value of… &lt;drumroll&gt; 0.04…</p><p>Which (especially when you take into account the wild number of tests performed) is… 😂🤣😂🤡</p><p><a href="https://wjmh.org/DOIx.php?id=10.5534/wjmh.220203" rel="nofollow noopener" target="_blank"><span class="invisible">https://</span><span class="ellipsis">wjmh.org/DOIx.php?id=10.5534/w</span><span class="invisible">jmh.220203</span></a></p><p><a href="https://mastodon.social/tags/pvalue" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pvalue</span></a> <a href="https://mastodon.social/tags/urology" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>urology</span></a></p>
Dr Mircea Zloteanu ☀️ 🌊🌴<p>Part II of my series on what to do with non-significant results is up now.</p><p>In this post, I focus on how to determine if your data is compatible with the claim of "no effect" (and why relying on p-values is wrong). It covers TOST equivalence tests and how to interpret and write up your results for publication. Link below 🔗 </p><p><a href="https://mastodon.social/tags/statistics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>statistics</span></a> <a href="https://mastodon.social/tags/frequentist" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>frequentist</span></a> <a href="https://mastodon.social/tags/NHST" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NHST</span></a> <a href="https://mastodon.social/tags/pvalue" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pvalue</span></a> <a href="https://mastodon.social/tags/equivalencetests" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>equivalencetests</span></a> <a href="https://mastodon.social/tags/TOST" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TOST</span></a> <a href="https://mastodon.social/tags/null" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>null</span></a> <a href="https://mastodon.social/tags/hypothesistesting" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>hypothesistesting</span></a> <a href="https://mastodon.social/tags/hypothesis" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>hypothesis</span></a></p><p><a href="https://mzstats.blogspot.com/2023/01/what-to-do-with-null-results-part-ii.html" rel="nofollow noopener" target="_blank"><span class="invisible">https://</span><span class="ellipsis">mzstats.blogspot.com/2023/01/w</span><span class="invisible">hat-to-do-with-null-results-part-ii.html</span></a></p>
Dr Mircea Zloteanu ☀️ 🌊🌴<p>Everyone focuses on misunderstandings of p-values, but the bigger problem is understanding effect sizes and power!</p><p>If you ran a properly powered study and were aware of a reasonable effect size in your research, then misinterpreting the p-value in your manuscript at the end will affect the scientific field less, as others can correct the interpretation later.</p><p><a href="https://mastodon.social/tags/PvalueWars" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PvalueWars</span></a> <a href="https://mastodon.social/tags/pvalue" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pvalue</span></a> <a href="https://mastodon.social/tags/stats" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>stats</span></a> <a href="https://mastodon.social/tags/statsdon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>statsdon</span></a></p>
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