EffectSize
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Psy302
Statistics 

 

Psy310 Racial Discovery Class 
 Wattles Home Page

Link for the effect size calculator  http://www.socscistatistics.com/effectsize/

Here are a couple of videos explaining effect size. 

https://www.youtube.com/watch?v=yVbYvn_cT5w   This video is slow and patient

 https://www.youtube.com/watch?v=xCt6zXiJUY0  This video is a bit more  comprehensive  

 

  https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3444174/  This is an article from the National Institute of Health (NIH) web site talking about effect size versus statistical significance.