Conditional Rolling Average

[yogeshk77]

I have below mentioned Power BI table structure Table

WeightedVel table contains below columns

“Team_10202” as a String Data type

“Reporting Sprint ID” as an Integer Data type

“Story_Points_10004” as a Decimal Data type

Now, I need a calculated column in this table to get average of last six “Story_Points_10004”, ordered by “Reporting Sprint ID”, grouped by “Team_10202”
Ensure you include the value of the current row in this calculation

For e.g. if the data is like this ->

The output should be like this ->

[v-yangliu-msft · Accepted solution]

Hi  @yogeshk77 ,

Here are the steps you can follow：

1. Create calculated column.

rank =
RANKX(
    FILTER(ALL(Expected),
    'Expected'[Team]=EARLIER('Expected'[Team])),[Reporting Sprint ID],,DESC)

Sum of Six Period Average =
IF(
    [rank] <=6,
    AVERAGEX(
        FILTER(ALL('Expected'),
        'Expected'[Team]=EARLIER('Expected'[Team])&&
        'Expected'[rank]>=EARLIER('Expected'[rank])&&'Expected'[rank]<=EARLIER('Expected'[rank])+5),[Story_Points])

)

2. Result:

Best Regards,

Liu Yang

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly

[yogeshk77]

Thank you.. In the stand alone test PBI this works, but in practical I have multiple other teams and looks like due to that combination the rank function is not working as expected.

Here's the result from my actual PBI

[yogeshk77]

You can check this file

I Need a calculated column in the table called "Data", which shows the output in the below table called "Expected Output"

[Greg_Deckler]

@yogeshk77 Should be:

Column = 
  VAR __Team = [Learnosity_Team_10202]
  VAR __Sprint = [Reporting Sprint ID]
  VAR __Sprints = SELECTCOLUMNS(FILTER('Table', [Learnosity_Team_10202] = __Team && [Reporting Sprint ID] <= __Sprint), "__SprintID", [Reporting Sprint ID])
  VAR __SprintsText = CONCATENATEX( __Sprints, [__SprintID], "|", [__SprintID], DESC)
  VAR __Table = 
    ADDCOLUMNS(
      GENERATESERIES( 1, COUNTROWS(__Sprints), 1 ),
      "__SprintID", PATHITEM(__SprintsText, [Value])
    )
  VAR __FinalSprints = FILTER(__Table, [Value] <= 6)
  VAR __Result = AVERAGEX( FILTER('Table', [Reporting Sprint ID] IN __FinalSprints), [Sum of Story_Points_10004)
RETURN
  __Result
  

Quite possible that you will get some kind of error complaining about text vs. number. Also, couldn't test this so the probability of a syntax error is fairly high. If you provide your sample data as text, could test this in a PBIX file and provide the PBIX file to you.