/sci/ - Science & Math

>>11681736
This map is debunked here
>>11681557
>>11681645
It is a fabrication by richard lynn
read the papers on why the african scores are wrong

>>11662992
>They accuse him of convenience and voluntary sampling as well as not being systematic.
"Convenience sampling" is a technical term.
>https://en.wikipedia.org/wiki/Convenience_sampling
and it refers to the types of IQ studies, not what Lynn did.
They accuse him of unsystematically cherry picking what he included in his estimate. Which is the truth.
What they're saying is that a systematic look (well defined exclusion/inclusion criteria)at those convenience sampled studies gives an estimate of 80 and not 70.
Also if you look closely there are representative samples among the studies with an average of 77.5 (not looked at by lynn)
pic rel is from this which is similar only with Raven's matrices.
https://jeltewichertsdotnet.files.wordpress.com/2015/12/wichertsravenafr2010.pdf