Econometrician
  
An econometrician is like a statistician, except she studies economics. Econometricians use statistics, math, data science, and modeling to study the economy. If you’ve ever heard of “regression analysis” in the economic sense, that’s what econometricians do, i.e. try to find a relationship between things given some data. In other words: econometricians just try to make sense of it all.
Econometricians can study the effect of government policies, predict how the economy might turn out if things keep going as they are, and even discover social inequality in places like our justice system. The only limits to what econometricians can do are the data that they have access to, and the mathematics and statistics that they know, including important details like how to make sure your regression isn’t accidentally biased.
If you want to read what they read (and write), you can check out econometrics research journals like Econometrica, the Journal of Econometrics, and the Journal of Applied Econometrics. You also may want to read People Who Desperately Need Hobbies.