modify get_mean_and_stddevs, syntax, docstrings
modify get_mean_and_stddevs, syntax, docstrings


Former-commit-id: 6d0649284d8cb1bd1b227ee8a1d812c37f453179 [formerly 6d0649284d8cb1bd1b227ee8a1d812c37f453179 [formerly 6d9eca7ff52dcdfbeda986a9866069800bd36841]]
Former-commit-id: 3d72bb995ab2f7bce41423624f3e6ef9e4167129
Former-commit-id: 8c9d294bdd26537f455cb5b2218b4053ac2b5dd0
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine