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#11
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Count Num of Unique items in col ?
For sure....
If this post helps click Yes --------------- Jacob Skaria "T. Valko" wrote: I love explaining things! I think I'd make a good teacher. -- Biff Microsoft Excel MVP "Sheeloo" wrote in message ... Thanks Biff (thanks to Jacob too), I get it now. Beautiful... You are essentially dividing the count of each different number from 1 so that you get the unique count when you sum them up... I had tried to understand the same way but my mistake was that I entered 5 different characters down to row 30 .... obscuring the meaning. Thanks for the wonderful way you explained it. "T. Valko" wrote: Can you pl. explain how this works? =SUMPRODUCT((H1:H1500"")/COUNTIF(H1:H1500,H1:H1500&"")) Try this... A1 = A A2 = B A3 = B A4 = C A5 = D =SUMPRODUCT((A1:A5"")/COUNTIF(A1:A5,A1:A5&"")) Result is 4 Break it down into individual calculations. Enter this formula in C1 and copy down to C5: =A1"" Enter this formula in D1 and copy down to D5: =COUNTIF(A$1:A$5,A1&"") Enter this formula in E1 and copy down to E5: =C1/D1 Enter this formula in F1: =SUM(E1:E5) That all makes sense, doesn't it? OK, delete the entry in A4. Now the result is 3 and it still makes sense. Ok, change the formula in D1 to: =COUNTIF(A$1:A$5,A1) Copy down to D5 and see what happens to those summary formulas. Concatenating the empty text string ("") prevents the #DIV/0! error when there are empty cells. If there were no empty cells then you could use: =SUMPRODUCT(1/COUNTIF(A1:A5,A1:A5)) =SUMPRODUCT((A1:A5"")/COUNTIF(A1:A5,A1:A5&"")) Seems to have evolved as the "standard". expbiff101 -- Biff Microsoft Excel MVP "Sheeloo" wrote in message ... Can you pl. explain how this works? "Gary''s Student" wrote: =SUMPRODUCT((H1:H1500"")/COUNTIF(H1:H1500,H1:H1500&"")) for data in column H. Adjust to suit -- Gary''s Student - gsnu200849 "NaplesDave" wrote: I need to be able to count the number of times an item Uniquely appears in a column. IE: Result cell NAMED: Species Contents of column: CAT CAT DOG CAT FISH FISH Species should = 3 How can I do this function in EXCEL 2003? |
#12
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Count Num of Unique items in col ?
Yes, you will.
I also enjoy teaching and that is my long term career goal. "T. Valko" wrote: I love explaining things! I think I'd make a good teacher. -- Biff Microsoft Excel MVP |
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