How to Resolve Duplicate Data within Excel Pivot Tables

An attendee from my recent pivot table webinar posed a question that I hadn’t encountered before.
 
Pamela had an issue where some, but not all, items within her pivot table were being duplicated, with two different totals. If you’re new to pivot tables, you can catch up by watching a free recording of the webinar.
 
In this article I’ll explain how I helped Pamela track down and resolve a nuance within her data. Although Pamela’s data set was much larger, I only need the two columns of data shown in Figure 1 to illustrate what she was experiencing. There’s a hidden aspect to this data that I’ll reveal in a moment, but let’s first create a pivot table from this data:
 
Figure 1: I’ll use this data set to explain why duplicate data may appear within a pivot table.
 
  • Excel 2007 and later: As shown in Figure 2, click on cell A1, choose Insert, Table, and then click OK. Click Summarize with Pivot Table from the Design tab, and then click OK.
  • Excel 2003 and earlier: Choose Data, List, Create, and then click OK. Next, choose Data, Pivot Table Wizard, and then click Finish.
Figure 2: Carry out the steps shown to create a pivot table.
 

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