"Modern IQ ranges for various occupations"

It appears that Finance, Insurance and Real Estate (FIRE) practitioners are not the smartest guys in the room.
This may be a bit dated, it is from 2007. I can't imagine the FIRE occupations improved their ranking, they sure didn't improve their reputation.
The social scientists ranking generally higher than natural science professionals should hearten some of my friends.
Just remember, the study of I.Q.'s is a social science.
From IQ Comparison.com:

 

This graph was adapted from Figure 12 of Hauser, Robert M. 2002. "Meritocracy, cognitive ability, and the sources of occupational success." CDE Working Paper 98-07 (rev). Center for Demography and Ecology, The University of Wisconsin-Madison, Madison, Wisconsin. The figure is labelled "Wisconsin Men's Henmon-Nelson IQ Distributions for 1992-94 Occupation Groups with 30 Cases or More" and is found at http://www.ssc.wisc.edu/cde/cdewp/98-07.pdf.  Used with permission.