Four-yearly Wage Structure Survey 
Sample errors
Studies completed. National total 
Unidades: %

;Both sexes;Women;Men;
All studies;0,42;0,56;0,66;
I. Without studies;4,79;8,82;5,33;
II. Primary education;1,54;2,32;1,81;
III. Secondary education I;1,04;1,55;1,3;
IV. Secondary education II;0,99;1,23;1,42;
V. Intermediate-level vocational training and Advanced vocational training;1,69;2,23;2,08;
VI. University diploma-holders or the equivalent;1,48;1,64;2,1;
VII. University graduates, advanced engineers and doctors;1,33;1,38;1,99;
Notas:
Fuente: National Statistics Institute