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 3 or 4 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,0.26,10.03,0.27, 18 to 24 years old,0.70,11.53,0.70, 25 to 29 years old,1.00,18.97,1.01, 30 to 34 years old,1.04,30.41,1.05, Notes: 1) Mobility: Moving abroad for study or training 2) CNED 3: Second stage of Secondary Education. CNED 4: Non-higher post-secondary education Source: INE