Survey on Adult Population Involvement in Learning Activities Formal and informal education. Absolute values Average number of hours of instruction per person in formal education activities, by sex and highest level of studies completed by the person carrying them out. Units: hours Average BOTH SEXES Total 414.47 First stage secondary education and lower 348.82 Intermediate-level studies 502.61 Tertiary level and university studies 395.58 MALES Total 437.28 First stage secondary education and lower 383.01 Intermediate-level studies 488.13 Tertiary level and university studies 429.01 FEMALES Total 395.52 First stage secondary education and lower 320.74 Intermediate-level studies 515.78 Tertiary level and university studies 368.70 Notes: 1) The Intermediate-level studies category is comprised of: Post-Secondary Education, intermediate-level technical-professional education. Data referring to the 12 months prior to the date of the survey. The symbol '.' shall be deemed as data which cannot be provided since it may be affected by sampling errors. Source: National Statistics Institute