In reply to zimpara:
I've created a formula for this exact scenario. Please bare with me but one will explain.
Take X as the common denominator.
Take Y as the sum
Presuming E5 is the mean.
Take the following table as reference:
E5 E5
E4 E4 E4
E3 E3 E3 E3 E3 E3
E2 E2 E2 E2 E2 E2 E2 E2 E2 E2 E2 E2
E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1
HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS HVS
VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS VS
HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HSHS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS HS
S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S
VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF VDIFF
This method has been used for decades within the Russian weightlifting work. Put simply, it calculates with an error buffer of +- 5%, how many lifts would be required in any column, to enable the athlete to lift the top column (for two reps).
To summarise Zimpara, one would need to climb 92 VDIFF grade rock climbs, in order to climb two E5s