I wonder if anyone can help I have a load of data about 200 people who have been on a diet. In colum A is there name in Comun B is the n of weeks they have been on the diet and column C is their starting weight. On a separate sheet I have week in column A and I want to have average start weight for that week in column B. Is there any formula I can put in to get it to search for the week (e.g. 1) in Column B of sheet 1 and then Average the starting masses for those people and put it into column B of Sheet 2?
Any help welcome.
Many thanks
Jack
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