thanks for your time and apologies if this is far too simple for this group.
I am trying to remove my average from a total average. Meaning:
The total average for a subset of data is 55. I am 29% of this subset and my average is 52.
If I were to remove myself from the equation, how could I find the average of the remaining 71% without me?
Your contribution to the total sum is $0.29\times52$, so what you need is $(55-0.29\times52)/(1-0.29)\approx 56.23$