Hi Friend,   I am new to SAS and while solving the problem stuck in very basic step. I have three coloumn data is like Grade sub Grade and their average value. I have take average of Grade and Sub-grade. Thank you...   Data Example InputData       Output     Col 1 Col 2 Avg     Average of Avg   A A1 15     Col 1 Col 2 Total A A2 13     A A1 15 A A3 16       A2 13 A A4 11       A3 16 B B1 12       A4 11 B B2 11     A Avg   13.75 B B3 13     B B1 12 C C1 17       B2 11 C C2 18       B3 13 C C3 13     B Avg   12 C C4 20     C C1 17 C C5 20       C2 18             C3 13             C4 20             C5 20           C Avg   17.6           Grand Total   14.91666667 ... View more