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emmaclarke83's avatar
emmaclarke83
Icon for Helper I rankHelper I
8 years ago

moving average over 26 weeks

I have a dataset which details the hours worked for every employee each week of the year.  I want to calculate a moving average over the past 26 weeks.  Is this possible?  Note, my date table does no...
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jthomson's avatar
jthomson
Icon for Solution Sage rankSolution Sage
8 years ago

How is the week value stored, is it just an integer, and does it reset yearly? Assuming yes and yes, I'd try looking up solutions on how people have created a yearmonth column in a date table - if you can do similar and end up with something like 201652 for the last week of last year and 201701 for the first week of this year, then you've got a single integer where the highest values are the most recent. It should be straightforward to use something like TOPN(26) as a filter for an average on your hours column

  • emmaclarke83's avatar
    emmaclarke83
    Icon for Helper I rankHelper I
    8 years ago

    excel sample

     

    Hi, yes an integer.


    I can make a year/week column no problem. However, the top26 will not work as this ia a moving average. I have attached a link above to an example Excel to show you what I mean.

     

    • v-caliao-msft's avatar
      v-caliao-msft
      Icon for Microsoft Employee rankMicrosoft Employee
      8 years ago

      emmaclarke83,

       

      You could use the measure below to get moving average over 26 weeks.

      26WeekMovingSumHour =
VAR minweeknumber =
    MAX ( Table1[Weeknumber] ) - 26
VAR maxweeknumber =
    MAX ( Table1[Weeknumber] )
RETURN
    CALCULATE (
        Table1[TotalWeekHour],
        FILTER (
            ALL ( Table1 ),
            Table1[Weeknumber] > minweeknumber
                && Table1[Weeknumber] <= maxweeknumber
        )
    )

      numberofweeks =
VAR minweeknumber =
    MAX ( Table1[Weeknumber] ) - 26
VAR maxweeknumber =
    MAX ( Table1[Weeknumber] )
RETURN
    CALCULATE (
        DISTINCTCOUNT ( Table1[Weeknumber] ),
        FILTER (
            ALL ( Table1 ),
            Table1[Weeknumber] > minweeknumber
                && Table1[Weeknumber] <= maxweeknumber
        )
    )

      26WeekMovingAverageHour =
VAR minweeknumber =
    MAX ( Table1[Weeknumber] ) - 26
VAR maxweeknumber =
    MAX ( Table1[Weeknumber] )
VAR numberofWeek =
    CALCULATE (
        DISTINCTCOUNT ( Table1[Weeknumber] ),
        FILTER (
            ALL ( Table1 ),
            Table1[Weeknumber] > minweeknumber
                && Table1[Weeknumber] <= maxweeknumber
        )
    )
VAR WeekMovingSumHour =
    CALCULATE (
        Table1[TotalWeekHour],
        FILTER (
            ALL ( Table1 ),
            Table1[Weeknumber] > minweeknumber
                && Table1[Weeknumber] <= maxweeknumber
        )
    )
RETURN
    WeekMovingSumHour / numberofWeek


       

      Regards,

      Charlie Liao

      • emmaclarke83's avatar
        emmaclarke83
        Icon for Helper I rankHelper I
        8 years ago

        Hi Charlie Thanks for your reply. I think this is close to what I need but I need it for each employee and when I add the employee number field the calculations don't look correct. Is there anything else I can do? Thanks Emma