1) The attribution of Global Warming to CO2, is not through simple correlation with data from ice ages as suggested here. (sciencebits.com)
Not surprisingly, parent socioeconomic status is strongly predictive of student test scores, and, looking at simple correlations, we find that less - advantaged students do tend to be assigned to teachers with lower VA measures. (educationnext.org)
Anthropogenic global warming does not rely on simple correlations. (realclimate.org)