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