Calculate the average per category

[Anonymous]

Hi,

i was searching yesterday within the community for a solution but did not find anything that matches my case. If this was already discussed i would be glad if somebody can piont out the post.

I would like to calculate the average price for different categories. The difficulity is that i have rows with different quantities. Here an example

line	Prodcut Type	qty	Total price
Platform 1	A	15	€ 61.51
Production line	Product name	qty	total price (not price per piece)

I don't know how i generate the correct calculation. I want to calculate the sum of total price and devide this by the sum of qty. 

Here is an excerpt of the table

line	Prodcut Type	qty	Price	Price per piece
Platform 1	A	15	€ 61.51	€ 4.10
Platform 1	B	14	€ 60.32	€ 4.31
Platform 1	G	21	€ 60.32	€ 2.87
Platform 1	G	42	€ 58.47	€ 1.39
Platform 1	J	33	€ 58.47	€ 1.77
Platform 1	W	49	€ 139.00	€ 2.84
Platform 2	J	15	€ 281.88	€ 18.79
Platform 2	Q	27	€ 143.39	€ 5.31
Platform 2	R	13	€ 57.04	€ 4.39
Platform 2	H	8	€ 57.04	€ 7.13
Platform 2	F	12	€ 93.04	€ 7.75
Platform 2	B	20	€ 206.89	€ 10.34
Platform 2	B	35	€ 207.36	€ 5.92
Platform 2	C	25	€ 126.34	€ 5.05
Platform 2	R	24	€ 126.34	€ 5.26
Platform 3	T	39	€ 131.94	€ 3.38
Platform 3	O	2	€ 138.16	€ 69.08
Platform 3	P	47	€ 56.24	€ 1.20
Platform 3	Y	44	€ 64.48	€ 1.47
Platform 3	W	43	€ 253.28	€ 5.89
Platform 3	R	20	€ 282.25	€ 14.11
Platform 3	D	27	€ 210.94	€ 7.81

These are the average values that i would like to calculate:

Line	Total Qty	Total Price	Average
Platform 1	174	€ 438.09	€      2.52
Platform 2	179	€ 1,299.32	€      7.26
Platform 3	222	€ 1,137.29	€      5.12

I am sure that there is a pretty easy solution which i did not consider. 

Thanks for you help!

[amitchandak]

Try like

divide(sum(price),sum(qty))

This will adjust according to the group by.

In case you need a category level fixed. try

https://community.powerbi.com/t5/Desktop/Calculate-Average-per-category/td-p/362637

Appreciate your Kudos. In case, this is the solution you are looking for, mark it as the Solution. In case it does not help, please provide additional information and mark me with @
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[Anonymous]

Thanks for you answer. 

Using the solution mentioned in the provided link i get the correct calculation. The problem now is that the calculation seems to be static. 

I have data from several months. If i select now a single month in my report the calculation does not adjust. 

Is it possible to create a dynamic calculation?

[amitchandak · Accepted solution]

Which calculations you have used.

In case you have used this, hope you created it is a measure, not Column

divide(sum(price),sum(qty))

Please share the formula you created. It should be dynamic. Unless there is join missing.  Or Interactions are off.

[Anonymous]

Thank you!

Using a measure instead of a column was the solution. 

Like I said ... the answer was very simple. 

I think i need to go back an review the differences between measures and columns.

Thanks again for the responses!

[amitchandak]

Columns are pre-calculated.  You can see them in the table view. And the measure is calculated run time. means there will impact of data grouping.

For Multiple-use, We typically use column A*B and then SUM. This means we need a column. Sales Amount= QTY* Price and then Sum(Sales Amount)

For Divide, we need to do Sum(A)/Sum(B). Discount % = Sum(Discount)/Sum(Sales)*100. Means we need measure.

Refer the pbix on this article - https://community.powerbi.com/t5/Community-Blog/Winner-Topper-on-Map-How-to-Color-States-on-a-Map-wi...