This mistake is very common, and here we look at an arbitrary example I was sent promoted by Rob Henderson on Twitter. This error is quite common (first example I found), so this was not chosen to say Rob is particularly bad at this. The same error can often be found in discussion of The Bell Curve with assortative mating. One can note that double college couples have markedly increased, suggesting increased assortative mating for education, but this is an effect of the increased college rates (especially for women), not of increased assortment,
Misleading plots on secular trends and education
Misleading plots on secular trends and…
Misleading plots on secular trends and education
This mistake is very common, and here we look at an arbitrary example I was sent promoted by Rob Henderson on Twitter. This error is quite common (first example I found), so this was not chosen to say Rob is particularly bad at this. The same error can often be found in discussion of The Bell Curve with assortative mating. One can note that double college couples have markedly increased, suggesting increased assortative mating for education, but this is an effect of the increased college rates (especially for women), not of increased assortment,