Acquire These Skills for a Higher Salary(salaryfairy.com)
salaryfairy.com
Acquire These Skills for a Higher Salary
https://salaryfairy.com/blog/acquire-these-skills-for-a-higher-salary
2 comments
May as well just learn everything on this list... http://www.computer.org/portal/web/swebok
...and of course, correlation does not imply causation. Additionally, there's a high chance of multicolinearity between the skills which will skew the results.
A better tactic is to use a linear regression and determine importance from the coefficients.