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Sum, Count and Average

Part of the Power BI Basics section of Coddy's Power BI journey. Lesson 4 of 28.

A visual turns many rows into one value. The way it combines them is the aggregation.

Numbers are summed by default, text is counted. You can switch to Average, Min, Max or Count (Distinct).

Match the aggregation to the question: "how many items" is a Sum, "items per line" an Average.

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Challenge

How busy is each shop? Chart the number of order lines per store: a bar chart with Stores[Store] on the axis and the count of Sales[OrderID] in values.

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All lessons in Power BI Basics

1Meet Power BI

What Power BI IsTables, Rows and ColumnsYour First ChartSum, Count and AverageFilters and SlicersRecap - Mia's First Report

4Calculated Columns

Columns vs MeasuresIF in a ColumnText ColumnsLooking Up with RELATEDColumns Feed MeasuresProfit and MarginWhen to Use WhichRecap - Profit by Category

2Your First Measures

What a Measure IsCounting RowsAverage, Min and MaxCounting Distinct ThingsMeasures Can Do MathSafe Division with DIVIDEMeasures Use Other MeasuresRecap - The Numbers Mia Wants

3One Measure, Many Answers

Same Measure, Every BarThe Total RowSlicers Change the AnswerTwo Fields on RowsFilters Follow RelationshipsRecap - The Store Report