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Instead, it gives them equal weight when it averages the four regions' averages together, skewing the number down. The status bar average, however, doesn't take into account that the West Region had four times the number of orders as the East Region. The Grand Total average in the pivot table is adding up all of the cells in the quantity column of the data set and dividing it by the total number of orders. Why is this? Understanding Pivot Table Calculations
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If you select all of the cells in the Values area (for each region), you'll notice that the Average calculation in the status bar is different from the result in the Grand Total row of the pivot table.
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The example above shows a pivot table with a summary report of Average Qty by Region. This is a question that comes up often when we are looking at the Grand Total row of a pivot table. It's not as accurate as taking an overall average of the original data that the averages came from. The same is true when we take the average of averages. If you've ever made a photocopy of a photocopy, you know that it never comes out quite as clear as a photocopy of an original. The following is the sample data that I am making use of the below examples both in Excel and in Google Download Precise Averages Sample Data for Subtotal and Grouping in Google Sheets and Excel So you will get a clear picture of what this topic is about. Let me show you how to group and subtotal in Excel first. In such type of subtotalling in Excel, you have the freedom to choose like the total to appear at each change in which column and the function to use (sum, average, count, etc.), etc. It helps users to total several rows of related data (groups of data) by automatically inserting subtotals. In Excel, this grouping and subtotal functionality is built-in to it and named as Subtotal (not the Subtotal function). I have one solution with the Sumif spreadsheet formula and the row grouping feature that Google added lately.
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Till then we should find some workaround to replicate the Excel similar Grouping and subtotal in Google Sheets. I am sure sooner or later Google will implement this feature in Google Spreadsheet. I am badly missing the Excel similar Grouping and Subtotal functionality in Google Sheets.
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