Fixed name error and Standard deviation issue
Fixed name error and Standard deviation issue


Former-commit-id: 185dccc0b21c2ddeb4979f24a2ef3eb861ba4880 [formerly bad6b134034b021af7e0400d59ba79f5321c6bb6] [formerly bad6b134034b021af7e0400d59ba79f5321c6bb6 [formerly 10e228e89d9de616e1f9ff4f431e8e3ff7b1b99b]]
Former-commit-id: 6bd5295eb486f4174c7067116e6ae648c117258e
Former-commit-id: 8159739239ea9beb5313bbfadb7b1bf7c25ee8c5
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine