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PARASURAMA: Why Overlapping Confidence Intervals Mean Nothing About Statistical Significance

[NOTE: This is a repost of a blog that Prasanna Parasurama published at the blogsite Towards Data Science]. “The confidence intervals of the two groups overlap, hence the difference is not statistically significant”  The statement above is wrong. Overlapping confidence…

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MCSHANE & GAL: Statistical Significance and Dichotomous Thinking Among Economists

[Note: This blog is based on our articles “Blinding Us to the Obvious? The Effect of Statistical Training on the Evaluation of Evidence” (Management Science, 2016) and “Statistical Significance and the Dichotomization of Evidence” (Journal of the American Statistical Association,…

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Is Fixing the Replication Crisis As Simple as Lowering the p-Value?

[From the article “A statistical fix for the replication crisis in science” by Valen E. Johnson at https://theconversation.com/au.] “In a trial of a new drug to cure cancer, 44 percent of 50 patients achieved remission after treatment. Without the drug, only…

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Do Guidelines on Statistical Practice Make a Difference?

[The post below comes from a review by Richard Morey of the article “Meeting the challenge of the Psychonomic Society’s 2012 Guidelines on Statistical Issues: Some success and some room for improvement“, published in the journal Psychonomic Bulletin & Review by Peter…

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