How to Count unique & duplicate records in Microsoft Excel
New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this MS Excel tutorial from ExcelIsFun, the 272nd installment in their series of digital spreadsheet magic tricks, you'll learn how to count unique records and duplicate records using the SUMPRODUCT, COUNTIF, COUNT, COUNTA, IF and SUM functions.