The 20% Statistician

A blog on statistics, methods, philosophy of science, and open science. Understanding 20% of statistics will improve 80% of your inferences.

Friday, October 11, 2019

Improving Your Statistical Questions

Three years after launching my first massive open online course (MOOC) ‘Improving Your Statistical Inferences’ on Coursera, today I am happy...

Saturday, September 14, 2019

Improving Education about P-values

A recent paper in AMPPS points out that many textbooks for introduction to psychology courses incorrectly explain p -values. There are doz...

Saturday, August 10, 2019

Requiring high-powered studies from scientists with resource constraints

Underpowered studies make it very difficult to learn something useful from the studies you perform. Low power means you have a high prob...

Sunday, July 21, 2019

Calculating Confidence Intervals around Standard Deviations

Power analyses require accurate estimates of the standard deviation. In this blog, I explain how to calculate confidence intervals around...

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