please find attached a calculation path of mine (as 3 images).
The intention was to obtain a 'weighted mean' (if one could say so) out of two estimates that originate from model averaging. I hope the attached file gives enough background to judge the calculation. If not I am ready to give more information.
Thank you
Hannes
P.s. It's possible to open and download the files with right-click and 'open in new tab' or something like that...