How do I get an effect size? Click here to go to our calculators page.
Who says its a small result? Click here to see the thresholds for interpreting effect sizes.
To send feedback or corrections regarding this page, click here.
How to cite this page? Ellis, P.D. (2009), "Result Whacker", website: [insert domain name here] accessed on [insert access date here].
Click here to go to Paul Ellis’s effect size website.
Who is Paul Ellis? Click here to find out.

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