I need help with a formula to calculate average number of rebills per client.
I don't know how to get excel to add the number of unique client in a given row. Example
Column A
Client 1
Client 1
Client 1
Client 2
Client 2
Client 2
Client 3
Client 4
Client 4
Client 4
Client 4
Client 5
Formula needs to calculate number of Unique clients. In this case, the answer is 5, but how can I get excel to calculate for me?
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