A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Custom data validation formula for cell A1:
=OR(A1="N.A.",ISNUMBER(A1))
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Hi! I would like to control the data entered into Excel cells. I would like to allow the following entries: either text "N.A." or any number (but not a combination of a number and text.) In other words the cell would contain either "N.A." or "30,6" but not "30,6 pg/mL". Can somebody please help me? Thanx a lot in advance!
A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
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Answer accepted by question author
Custom data validation formula for cell A1:
=OR(A1="N.A.",ISNUMBER(A1))
Luke, thank you so much - it worked! :)