Four-yearly Wage Structure Survey 
Sampling errors
Studies undertaken. National total
Unidades:   %

,Both sexes,Females,Males,
        All studies,"","","",
        I. Less than Primary,"","","",
        II. Primary education,"","","",
        III. First stage of secondary education,"","","",
        IV. Second stage of secondary education,"","","",
        V. Higher-level vocational training courses and similar,"","","",
        VI. University graduates and the like,"","","",
        VII. Graduates and similar, and university doctors,"","","",
Notas:
Fuente: