Household Budget Survey (HBS) 
Variation coefficient (VC) of total expenditure according to different classification variables 
VC of total expenditure by educational level of the main breadwinner. 
Unidades: %
,2015,2014,2013,2012,2011,2010,2009,2008,2007,2006,
        Total,0,8,0,8,0,8,0,8,0,8,0,8,0,8,0,8,0,8,0,9,
        Inferior a la primera etapa de Educación Secundaria,2,3,2,6,2,5,2,4,2,3,2,2,2,1,2,1,9,1,9,
        First stage of secondary education and the like,1,7,1,5,1,5,1,6,1,7,1,8,1,8,1,8,2,2,2,
        Second stage of secondary education and non-upper post-secondary education.,2,2,2,2,2,1,2,1,2,2,2,1,2,2,2,4,2,5,2,8,
        Enseñanzas de Formación Profesional de Grado Superior y similares,3,1,3,1,3,1,3,2,3,2,3,2,3,3,3,4,3,7,4,
        Grado (240 ETCS), Diplomatura, Ingeniería Técnica y similares,3,3,3,3,3,4,3,4,3,4,3,5,3,6,3,7,3,8,3,9,
        Grado (más de 240 ECTS), Licenciatura, Ingeniería, Máster, Doctorado,3,3,3,3,3,5,3,6,3,8,3,6,3,7,3,8,3,7,3,9,
Notas:
Until 2014, all university degree programmes were included in a single category ¿Degree (240 ETCS), Undergraduate degree...¿. As of 2015, the level of education follows the National Classification of Education CNED - 2014.
Due to a lack of representativeness, estimates cannot be provided for the cells without data (to points)
Illiterate persons are included in "Lower than first stage of Secondary education" category
Fuente: