"Include physical value" check box in the item model group

Dear all:

Hope you are doing very well.

In the item model group under the “Inventory” model tab we can find check box named “Include physical value” , I read at Microsoft website that this check box is used ti include the physically received quantity amount in calculating the item running average cost , I using the weighted average ion my costing , what is the best best option in this case to activated or deactivate this check box because Microsoft explain that the cost calculation will be different ??

Please advice