I need some clarification on how/what the SLA function is calculating. Here I have an example of a call center planning scenario where I first input an SLA, Target Response Time, Average Arrival Rate and Average duration to get # of servers using the AGENTS function.
I then allow for adjustment to # agents and re-calculate the SLA based on the adjustment. However, when 0 adjustment is made, the calculated SLA does not equal my original input, even though the calcuated SLA uses the same paramters that I used for the agents formula.
Can someone explain why the Adjusted SLA <> SLA Input when # agents is the same?