[R-meta] effect size similarities

[Patrizio E Tressoldi]

Il 22/06/2021 15:54, Viechtbauer, Wolfgang (SP) ha scritto:
> Dear Patrizio,
>
> I don't know what exactly you mean by 'binomial z value', but Hedges' g is not a 'z score'. If that were the case, then g values would have a variance of 1, which is clearly not true.
>
Here you can see the formula:

https://www.mathcelebrity.com/binomial.php?n=10&p=0.4&k=3&t=&pl=Normal+Approximation 
<https://www.mathcelebrity.com/binomial.php?n=10&p=0.4&k=3&t=&pl=Normal+Approximation>


Given you said they are different, how they must be transformed for 
their comparison?

Thanks

Patrizio

-- 
Patrizio E. Tressoldi Ph.D.
Science of Consciousness Research Group
Studium Patavinum
Università di Padova
Padova - ITALY
http://www.patriziotressoldi.it
http://www.socrg.org
https://orcid.org/0000-0002-6404-0058
https://opensciences.org/about/manifesto-for-a-post-materialist-science

Make war history
support https://en.emergency.it