P C O N G R E A T = S u m S h a r e s S q − 1 S u m G r e a t 1 − 1 S u m G r e a t {\displaystyle PCONGREAT={\sqrt {\frac {SumSharesSq-{\frac {1}{SumGreat}}}{1-{\frac {1}{SumGreat}}}}}}
where
S u m S h a r e s S q = ∑ G P o w e r s ( P O W E R γ ∑ G P O W E R S P O W E R γ ) 2 {\displaystyle SumSharesSq=\sum ^{GPowers}({\frac {POWER_{\gamma }}{\sum ^{GPOWERS}POWER_{\gamma }}})^{2}}
<math>SumGreat=NumberofGreatPowers
