Counting Data

[Byron720]

In a column I have hundreds of airway bills. I need to calculate how many
different numbers I have in that report. Not the total (I can go to the last
row for that) and not the frequency. For example:

9140266155
9182187486
9182187556
9182187556
9182187464
9182187464
9140266166
9140266166
9140266170
9140266170
9140266181

Here the formula here should give me 7 which is the number of different
AWB's there are.

 

[Gary''s Student]

=SUM(1/COUNTIF(A1:A11,A1:A11))


This is an array formula that must be entered with CNTRL-SHFT-ENTER rather
than just the ENTER key.

(If you enter it the wrong way you will get 1.)

 

[Luke M]

From the XL help file "Count the number of unique values by using functions":

=SUM(IF(FREQUENCY(A2:A10,A2:A10)>0,1))
Note that this needs to be entered as an array (use Ctrl+Shift+Enter)

 

[T. Valko]

In a column I have hundreds of airway bills.

The following formulas are SLOW to calculate if you had 1000's of rows of
data.

If there are no empty cells within the range:

=SUMPRODUCT(1/COUNTIF(A1:A11,A1:A11))

If there might be empty cells within the range:

=SUMPRODUCT((A1:A11<>"")/COUNTIF(A1:A11,A1:A11&""))