Calculate the average

[Eesa]

Hi,

I want to create a DAX formula that calculates the average price of product category.

I have the following SALES table, I want DAX to sum the prices for each category and divide it by the number of category present in my dataset. 

Mathematically, it will be like this:

Sum of Clothing = 47

Sum of Electronics = 1300 

Sum of Home = 250 

Average by Category = 532.33

 

If want to filter from another table for one category the sum is the same as the average because it will divide by one. 

Thank you

[bcdobbs · Accepted solution]

Try something like:

AVERAGEX (
    VALUES ( SALES[Category] ),
    CALCULATE ( SUM ( SALES[Price] ) )
)

VALUES gives a distinct list of categories.

AVERAGEX then iterates over this list of categories and calculates the sum of prices for each.

You need the CALCULATE statement there to turn the row context that you're on into a filter context on the table. If you leave it out it will just return the total price for the whole table.

Once it has a sum for each category averagex divides by the number of categories.

[Anonymous · Accepted solution]

Hi,

Please follow below steps

1. Create a measure with below Dax

Distinct Category = DISTINCTCOUNT('Table'[Category])

2. Create one more measure for calculating Average 

Average Price by category = sum('Table'[Price])/[Distinct Category]

I have attached solution in sample file and uploaded on Sharepoint

https://onedrive.live.com/?cid=9429FE789841BAAD&id=9429FE789841BAAD%21106&parId=root&o=OneUp 

Please confirm if the solution works..!!

[bcdobbs · Accepted solution]

Try something like:

AVERAGEX (
    VALUES ( SALES[Category] ),
    CALCULATE ( SUM ( SALES[Price] ) )
)

VALUES gives a distinct list of categories.

AVERAGEX then iterates over this list of categories and calculates the sum of prices for each.

You need the CALCULATE statement there to turn the row context that you're on into a filter context on the table. If you leave it out it will just return the total price for the whole table.

Once it has a sum for each category averagex divides by the number of categories.