you give the same person 10 different IQ tests, and they all give the same, or close to the same result

yes, i'm querying random people on the same series of questions

if one sample group performs noticably worse

i can say that that sample group on average performs worse

really.. do they take the test multiple times... dont think they do

not all the time ofc, but leme tell you how a new baby IQ test becomes an adult

you take the baby IQ test, and another well established one, and then a couple more for good measure, and then you quiz a random group of people

if he lil baby IQ test gives about the same result as the other ones, you get a proven IQ test

its valid across the general intelligence spectrum

do this a couple times with a couple different groups in different countries etc, and it becomes well established

i dont think you know how IQ is measured

IQ is based on the average of the group you tested

group of people... not group of races

yes, and if you give the entire human race the same IQ test

you can still categorise them according to race

and said category... would be meaningless

what makes you say that?

just like if you group them by what colour hat they wear

yes you can do that too

you could, but you wont get data that shows differences between hats

so what will it mean if blue hat wearers are smarter? will you start going around wearing a blue hat?

regardless, take it up in the questionare, perhaps you will be surprized

the difference is that blue hats are exchangable

you can't suddenly become a chinese person

ok hair colour

yes

eye colour

with that you can definately test to see if blonde people on average are dumber than for example brown haired ones

length of toes

yes

wtf does it matter?

the end is that you know

does there have to be a negative point proven?

actually, lenghts of digits correlates with testosterone

well... you dont know really... do you? ... you know for that set of data... then it might turn out the yellow har wearers have higher IQ next time

pretty funny tbh

yes

or blue eyed people next time

or red heads

absolutely

and you take it all into account