Allegedly Team which I presume is black runs IQ test in Nigeria and presenter claims they came up with similar results to previous test giving studies
Screenshot from video at link
If the test would have a finite countable and whole number of questions equal to N and you can only get 1 or 0 points for each question towards the raw test score this would result in N + 1 combinations for raw test scores. If N + 2 or more people took the test there would be a 100% chance that at least two people got exactly the same test score.
These raw test score could be converted to an IQ score based on whatever bad statistical assumptions are assumed like normal distribution
If you have a continous variable with a unlimitted number of possible values the probability of getting exactly the same quantity with measurements of 2 different things by random chance should approach zero
Usually for continous variables measurements are put in categories within a certain range
for example instead of counting the number of outcomes that are exactly 60 inches one could count the number of outcomes between 59.5 & 60.5 inches
But if it is a discrete variable it is not 0
