I have a report that contains hundreds of sales transaction on a daily basis. My report has 2 summaries: Weekly sum of sales and drills down to daily sum of sales, and finally drills down to the details. I would like to take the average of the summarized daily transactions Average(Sum(Day1)+Sum(Day2)+ sum(Day3...). As it is Crystal takes the average of ALL the individual transactions per day. This makes my weekly average small because the indidividual detailed transactions vary widely from a very small amount to a huge amount. Therefore, I would like to take a weekly average of the SUM of transactions per day. Please help. THANK YOU MUCH.