Calculate Employee Attrition Rate for Rolling 12-Month (1 Year) Period

[#1]

Hello - I am new to Qlickview, and trying to build a variable to calculate employee attrition but running into issues.  Any insights appreciated.  Thanks.

Objective

• Calculate Attrition Rate for 12 Month (1 Year) Period – Current Period (eg, through the Month ending Jan 2017) and Year Ago Period (eg, through the month ending Jan 2016) 
• Period rolls forward with each successive month
• Display the 12 month rate for the period (not the 12 month rate for each month).  In other words, the rate from the last month in the period back 12 months. 
• To be used as a variable, with other dimensions (job type, etc).

Calculations -

Turnover Formula:  Turnover Rate = Total terminations / Average Headcount

In Quikview:

• Total Terminations for the 12 Month Period -- RangeSum(Above(total sum([Termination Count]),0,12))
• Average Headcount for the 12 Month Period -- RangeAvg(Above(total sum([Ending Headcount]),0,12))
• Term Rate - RangeSum(Above(total sum([Termination Count]),0,12))  /  RangeAvg(Above(total sum([Ending Headcount]),0,12))

Problem

• When I display both Record Year and Record Month, everything works.  Total Terminations, Average Headcount, and Term Rate yield correct results (verified against Excel spreadsheet).
• When I click on the table to take Record Month out of the display, leaving just Record Year, which is what I am after, Total Terminations calculate correctly, but Average Headcount sums all the records in the data set rather than averaging the monthly sums.  Which of course throws off the Term Rate.

Data Structured

Record Month	Record Year	Record Type	Dimension 1	Dimension 2	Ending Headcount	Termination Count
Jan	2017	Snap	Group1	Orgx	1
Jan	2017	Snap			1
Jan	2017	Snap			1
Jan	2017	Activity				1
Dec	2016	Snap			1
Dec	2016	Snap			1
Dec	2016	Snap			1
Dec	2017	Activity				1
Dec	2016	Activity				1
….
Feb	2016	Snap			1
Feb	2016	Snap			1
Feb	2016	Snap			1
Feb	2016	Activity				1
Feb	2016	Activity				1
Feb	2016	Activity				1

[santho_ak]

Its almost a year old post. But wanna give a try to see whether it works or no. So that it might be useful for someone else.

count(if(RecordYear(Today()-365)=RecordYear,TerminationCount))