Hi, I need help for my thesis. I consulted with 2 statisticians and they gave me different results. So, basically, my problem is to know if independent factors (ex. sex, age, educational attainment, type of employment (direct/agency), years of teaching experience, etc.) influence the salary of teachers. The data collected are in ranges (salary = 15,000 - 20000; 20,001 - 25,000; etc). I want to know if females have higher salaries than males, and so forth, so what statistical tools should be used?