At some point, Microsoft Excel decided that the word AVERAGE in an "if" statement was a reference to a range of cells in a column under a column heading "Average." The column heading is typed as I typed it: Average. Every time I try to alter the IF statement by changing Average to AVERAGE, it changes back. I can't find the named range in the define box, as the help screen suggested to do. What did I do and how do I undo it. My workaround was to add the cells and divide by the number of cells instead of using the average function, but I want to know what happened so I don't do it again!