Fixed stats_test
Fixed stats_test


Former-commit-id: ec8a755df4f1061257407f19ca4902551bad3e0c [formerly ec8a755df4f1061257407f19ca4902551bad3e0c [formerly 1a1c6b4800770fe95da7a157d88d9ea72f00bf4e]]
Former-commit-id: 5caa582b34a0f9e611f9a04e055a10ccf1ba82d4
Former-commit-id: 62315703b148814a4803351b8b1c4057b52fbbe1
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine