The 20% Statistician

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

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...

Monday, July 15, 2019

Using Decision Theory to Justify Your Alpha

Guest blog by Nicholas A. Coles Nicholas Coles (colesn@utk.edu; Twitter: @coles_nicholas_) is a social psychology PhD student at the Univer...

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