For appearing in Indian Economic Services / Indian Statistical Services Exam you must have obtained a Post-graduate degree in Economics/Applied Economics/Business Economics/Econometrics. Whereas for Indian Statistical Services a Post-Graduate degree in Statistics/Mathematical Statistics/Applied Statistics from a recognized University/institution is required from you. Besides you shuold must also have attained the age of 21 years and must not have attained the age of 30 years on the 1st January, of the year he is taking the exam.