An executive wants a monthly report that shows the number of different customers who placed orders, while avoiding duplicates. Which measure is recommended?
Distinct count of customer IDs
Maximum associated ID
Sum of all orders
Average transaction size
A distinct count ensures each customer ID is only counted once, which addresses the need to avoid counting duplicates. Summing up orders or calculating an average would count multiple purchases from the same customer more than once, and finding the maximum ID has no value in revealing the total of different buyers.
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