Fixed geometric mean calculation.
Fixed geometric mean calculation.


Former-commit-id: 8ef9096f085a4819e879f5abeeba431d591c6a47
HPI-SWA-Lab/SQPyte,HPI-SWA-Lab/SQPyte,HPI-SWA-Lab/SQPyte,HPI-SWA-Lab/SQPyte,HPI-SWA-Lab/SQPyte