Interesting: a negative correlation between altitude and cancer in the U.S. (one also exists for obesity) http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3578453/ …
@Alrenous 2) It doesn't affect the regression, but radiation at sea level is not actually 0. Whole thing is amateurish.
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. Banned in Sweden. SubGenius, Zhuangist, white-hat troll. Defrocked mathematician. Brain problems.