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> For example, intelligence, as measured by IQ tests, follows this pattern. Average IQ is 100, but nobody has an IQ of 1,000 or 10,000. True, but can IQ be, sa
by aivisol 7y ago
> For example, intelligence, as measured by IQ tests, follows this pattern. Average IQ is 100, but nobody has an IQ of 1,000 or 10,000.
True, but can IQ be, say 210? If yes, then standard deviation cannot be applied here, right? Because for that you would need someone with opposite IQ, i.e. -10?
> The same is true of effort, as measured by hours worked. Some people work more hours than average and some work less, but nobody works a billion times more hours than anybody else.
Same here. If average work hours is 8 hours per day, and someone works 17 hours, then again, standard deviation cannot be applied? Am I right or making some error here?
Edit: thanks for clarifications on IQ, I got it, my bad for not doing a research. The question of working hours stands, however.
- neogodless 7y agohttps://en.wikipedia.org/wiki/IQ_classification#Historical_IQ_classification_tables https://en.wikipedia.org/wiki/IQ_classification#Historical_I... I can't find a particularly ironclad source, but I read recently that the test structure is such that scores over, for example, 175, are not meaningfully variable. At that point, the test isn't capable of or effective measuring further differences.
- JackRabbitSlim 7y agoNo. Most IQ tests top out around 130/160. IQ score isn't linear, its closer to logarithmic. It's designed specifically to keep 100 as the mean average so that <80 is retarded and >130 is genius.
- goalieca 7y agoYou’re right in that it’s not a pure Gaussian distribution
- harryh 7y agoEvery 15 points of IQ is 1 standard deviation from the mean. So 210 is 7.3 standard deviations away from 100. Just 7 standard deviations away from the mean means that you would expect only 1 in 780 billion from a population. Given that this is far more than the number of people on Earth: No, no one has an IQ of 210.
- LyndsySimon 7y agoWell, to be fair, it’s only “highly unlikely” that anyone on Earth has an IQ of 210. Given that seven sigma deviation should occur one time in 780 billion and that there are ~7.8b people on Earth today, then there is a ~1% chance of a person with an IQ of 210 being alive today :)