Fitting observations

Intelligence and Religious and Political Differences Among Members of the U.S. Academic Elite. 

"There is sound evidence of a negative correlation between intelligence and religiosity and [a negative correlation] between intelligence and political extremism. This makes it unlikely that these results are a statistical fluke. Therefore the most probable reason behind elite social scientists being more religious than are elite physical scientists is that [on average] social scientists are less intelligent [than are physical scientists]. Intelligence is also a factor in interdisciplinary differences in political extremism, physicists, who have high IQs, being among the least extreme and lower-IQ scholars being among the most extreme. Future research using larger academic samples would be extremely useful in exploring these areas in greater depth."

Physics & Astronomy: average IQ = 133
Social Sciences: average IQ = 115

Mean IQ score of persons in various occupations, taken from a variety of Western studies

Professors and researchers.......131, 134
Physicians and surgeons............128
Lawyers........................................128
Accountants..................................119, 128
Engineers (civil and mechanical)125
School teachers............................121, 123
General managers in business...122
Education administrators............122
Stenographers..............................119, 121
Pharmacists..................................120
Nurses...........................................119
Senior clerks................................118
Managers, production.................118
Clerks (general)...........................118
Managers, miscellaneous...........116
Cashiers.......................................116
Foremen, industrial......................114
Salesmen.....................................114
Clerks...........................................112
Electricians..................................109
Policemen....................................108
Mechanics....................................106
Machine operator........................105
Store managers..........................103
Shopkeepers...............................103
Butchers.......................................103
Carpenters, construction............102

Warehouse men...........................98
Carpenters and cabinet makers.97
Machine operator.........................97
Cooks and bakers........................97
Drivers, truck and van...................97
Laborers........................................96
Small farmers................................96
Gardeners.....................................95
Unskilled laborer...........................90
Factory packers and sorters........85

https://www.iqcomparisonsite.com/occupations.aspx .