Forum Discussion
converting an excel calculation to DAX
I have a user with a specific request for help converting an Excel spreadsheet into a Power BI report. The data table that he is using is below.
NC Rate Doc = Documentation / Production
3mo Avg is three month rolling average of NC Rate Doc
The Alert is 3mo avg+2*sqrt(3mo avg*(1-3mo avg) / Production)
OR
$E4+2*SQRT($E4*(1-$E4)/$B4)
I was able to find enough information to get the rolling average ( listed below) but the Alert is alluding me
Any help is greatly appreciated.
| a | b | c | d | e | f | g | |
| 1 | Month | Production | Documentation | NC Rate Doc | 3mo Avg | Alert | Action |
| 2 | Mar-21 | 11738 | 55 | 0.5% | |||
| 3 | Apr-21 | 11389 | 52 | 0.5% | |||
| 4 | May-21 | 10720 | 35 | 0.3% | 0.4% | 0.5% | 0.6% |
| 5 | Jun-21 | 12167 | 58 | 0.5% | 0.4% | 0.5% | 0.6% |
| 6 | Jul-21 | 11876 | 62 | 0.5% | 0.4% | 0.6% | 0.6% |
| Aug-21 | 13589 | 72 | 0.5% | 0.5% | 0.6% | 0.7% | |
| Sep-21 | 12872 | 90 | 0.7% | 0.6% | 0.7% | 0.8% | |
| Oct-21 | 12579 | 51 | 0.4% | 0.5% | 0.7% | 0.7% | |
| Nov-21 | 12523 | 59 | 0.5% | 0.5% | 0.7% | 0.7% | |
| Dec-21 | 12631 | 56 | 0.4% | 0.4% | 0.6% | 0.6% | |
| Jan-22 | 12316 | 63 | 0.5% | 0.5% | 0.6% | 0.7% | |
| Feb-22 | 14158 | 60 | 0.4% | 0.5% | 0.6% | 0.6% | |
| Mar-22 | 11103 | 42 | 0.4% | 0.4% | 0.6% | 0.6% |
NCs R03M =
VAR NumberofMonths = 3
VAR LastSelectedDate = MAX('Datekey'[Date])
VAR Period = DATESINPERIOD('DateKey'[Date], LastSelectedDate, -NumberofMonths, MONTH)
VAR Result =
CALCULATE(
AVERAGEX(
VALUES('DateKey'[YearMonthnumber]),
[NC Count]
),
Period
)
RETURN
Result