Forum Discussion
Average
Hello,
I am trying (and failing) to work out the average execution time of a report. I have a fact table called ReportExecution in the following (simplified) format:
Date ReportName UserName ReportCount AvgerageTime
20/12/17 StockReport Joe Lewis 6 31
21/12/17 StockReport Joe Lewis 5 36
21/12/17 StockReport Asim Shah 8 49
22/12/17 StockReport Asim Shah 2 50
The table has one row for every user / day / report, ReportCount is the total times a user has run the report for that day.
I need to get the actual average and not just an average of an average.
If I was doing this in excel I would do something like...
1. Get total time for each row by multiplying average time by report count
2. Get the total time for the set by summing the row totals
3. Get the total report count by summing the report count for each row
4. Divide the total time by the total report count
Any help would be appreciated.
So, maybe create a new column in your fact table:
TotalTime = [ReportCount] * [AverageTime]
Then create a measure like:
MyAverage = DIVIDE(SUM([TotalTime]),SUM([ReportCount]))
2 Replies
So, maybe create a new column in your fact table:
TotalTime = [ReportCount] * [AverageTime]
Then create a measure like:
MyAverage = DIVIDE(SUM([TotalTime]),SUM([ReportCount]))
Excellent, thank you.
