disclaimer: I'm (evidently) not a mathematician/statistician and a total n00b so if this question is too basic for the community let me know! Also excuse any misuse of terminology!
Say I have two lines on a graph:
Visually I can see that generally the grey line is lower than the red line. But how can I say this mathematically so that it results in a true or false?
Standard Deviation
If I apply standard deviation on the red line I can easily see if any points in the grey bar deviate from the range of the red.
But how can I say that this generally happens for all the points?
Is it about taking the average value of the grey line and seeing if that average value is within or outside the standard deviation of the red line?
I suppose ratio of MRR/Customer Churns as function of time is a good enough parameter for comparisons.