Rolling average per day over months (not MTD)

[MiKeZZa]

I'm making a report based on the day of the month (1-31). I want to make a report that says how much expenses there have been in previous months per day and compare that to the current month. Lets say I have this:

1 Jan 10

1 Jan 20

2 Jan 20

1 Feb 10

2 Feb 20

2 Feb 30

1 Mar 15

2 Mar 20

2 Mar 20

So when it's 2 March now I want to calculate this is an report based:

Previous months:

1 = (10+20+10) / 3 = 13.33

2 = (20+20+30) / 3 = 23.33 + 13.33 (from day 1) = 36.66

Current month:

1 = 15

2 = (20+20) / 2 = 20 + 15 (from day 1) = 35

So the 'problem' is that I want to do something that is like a MTD, but then not just ín a month, but for all months for 1 specific date.

So it must turn it to this (and of course 31 days but that was a little to much work to create some dummydata for that ):

[v-danhe-msft · Accepted solution]

Hi @MiKeZZa,

Based on my test, you could refer to below steps:

Create four measures:

Previous = CALCULATE(AVERAGE(Table1[Value]),FILTER(ALL(Table1),'Table1'[Item]=MAX('Table1'[Item])&&'Table1'[Month]<>"Mar"))

Previous running total in Item = CALCULATE(SUMX(FILTER(ALL(Table1[Item]),Table1[Item]<=MAX(Table1[Item])),'Table1'[Previous]))

Current = CALCULATE(AVERAGE(Table1[Value]),FILTER(ALL(Table1),'Table1'[Item]=MAX('Table1'[Item])&&'Table1'[Month]="Mar"))

Current running total in Item = CALCULATE(SUMX(FILTER(ALL(Table1[Item]),Table1[Item]<=MAX(Table1[Item])),'Table1'[Current]))

Result:

You could also download the pbix file to have a view.

Regards,

Daniel He

[MiKeZZa]

Yeah. This works great. I had to make some little changes to get it done at my PBIX (off course) but works great. Thank you!

One additional question; is it possible to cut off the current running total in item so that it stops growing after the current date? What I have now (because of that it's the 19th today) is this:

1 - 10

2 - 25

3 - 35

4 - 47

5 - 50

6 - 62

7 - 85

8 - 100

9 - 102

10 - 105

11 - 122

12 - 125

13 - 135

14 - 147

15 - 152

16 - 155

17 - 158

18 - 165

19 - 165

20 - 165

.....

31 - 165

Off course this is the normal behaviour for a running total, but for this case it's more nice that it stops at the current day. You also have an idea how this can be done?