Average per time intervall

[alex320]

Hi,

I want to calculate how the average ticket handling time changes over time. I have service tickets in Jira, which take a certain time to be solved. 

Ticket	Closed date	Duration (min)
1	15.1.2022	4
2	19.1.2022	7
3	3.2.2022	2
4	9.2.2022	9
5	27.2.2022	5
6	1.3.2022	7
7	9.3.2022	8

I want to document that by end of January the average handling time was (4+7)/2. In Febrary (incl. the history of January) average time was (4+7+2+9+5)/5. In March (incl. the history of January+February) average time was (4+7+2+9+5+7+8)/7.  

Thanks

Alex

[alex320]

Thanks a lot, exactly what I needed 👍

[olgad · Accepted solution]

Hi Alex, 
calculate cumulative total duration, cumulative rows and dived duration by rows.

Output =

var CumulativeRows=CALCULATE(

   COUNTROWS('Table'),

    FILTER(

        ALL('Table'),

        'Table'[Closed Date]<=Max('Table'[Closed Date])

    )

)

var CumulativeDurationMin=CALCULATE(

   Sum('Table'[Duration (min)]),

    FILTER(

        ALL('Table'),

        'Table'[Closed Date]<=Max('Table'[Closed Date])

    )

)

RETURN

Divide([Cumulative Total], [Cumulative Rows])