Survey on International Mobility of Students SAMPLING ERRORS Sampling errors relative to persons from 18 to 34 by age group and cases of mobility in languages courses Units: Coefficient of variation ;Moved abroad;Did not move abroad; TOTAL;2.47;0.34; 18 to 24 years old;3.81;0.61; 25 to 29 years old;4.18;0.63; 30 to 34 years old;6.24;0.63; Notes: 1) Mobility: Moving abroad for study or training Source: INE