Survey on International Mobility of Students SAMPLING ERRORS Sampling errors relative to persons from 18 to 34 years old that have reached at least CNED 8 formation level (or they are carrying out these studies) by age group and case of mobility Units: Coefficient of variation ;Total;Moved abroad;Did not move abroad; TOTAL;12.55;20.25;15.25; 18 to 29 years;13.62;23.11;19.49; 30 to 34 years old;19.12;31.89;24.25; Notes: 1) Mobility: Moving abroad for study or training 2) CNED 8: Doctorate Education Source: INE