Are IQ scales interval or ordinal?
One of the more obscure objections to intelligence testing is that really the tests are only on ordinal scale, and thus many of the usual statistical operations are undefined. Recall,…
Mount Everest is not cold (controlling for altitude and latitude)
Most researchers don't seem to think carefully about what they put in their regression models as statistical controls. By controlling for a variable, you attempt to hold that variable at…
Scraping: temperature and precipitation data for all NOAA weather stations
Some people claim that the climate has direct causal influences on income, cognitive ability and so on. Usually, these academics just regress IQ on climate variables at the country or…