Test statistics and effect sizes

The two statistical concepts are distinct.

Researchers may confuse a test statistic for a standardised effect size.

Test statistics and standardised effect sizes are distinct. The two figures may have similar formulae, but represent different things. This article shows the example of comparing mean averages in independent samples.

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Anthony B. Masters

This blog looks at the use of statistics in Britain and beyond. It is written by RSS Statistical Ambassador and Chartered Statistician @anthonybmasters.