Let me understand you requirement.
1. First of you want to compute the Change (Current - Previous)
2. and then you want to take the absolute value for the change and compute the deviation. Some think like in this website ------ http:/en.wikipedia.org/wiki/Deviation_(statistics)
3. and then compute average for those values.
Is this true?
Here is an example of what I'd like to compute using Qlik Sense-
The original data is Contr_MSA. The final output variable I'd like to use is the measure of consistency of growth, which is the difference of Deviation and average annual growth.
I would like to know if it's possible to compute this measure internally in Qlik.