fix stddev combination computation
fix stddev combination computation

tempbottle/rethinkdb,sbusso/rethinkdb,eliangidoni/rethinkdb,catroot/rethinkdb,losywee/rethinkdb,greyhwndz/rethinkdb,scripni/rethinkdb,KSanthanam/rethinkdb,grandquista/rethinkdb,catroot/rethinkdb,dparnell/rethinkdb,jesseditson/rethinkdb,jesseditson/rethinkdb,jmptrader/rethinkdb,bchavez/rethinkdb,lenstr/rethinkdb,yaolinz/rethinkdb,catroot/rethinkdb,robertjpayne/rethinkdb,AntouanK/rethinkdb,mcanthony/rethinkdb,victorbriz/rethinkdb,Qinusty/rethinkdb,yaolinz/rethinkdb,marshall007/rethinkdb,scripni/rethinkdb,catroot/rethinkdb,ayumilong/rethinkdb,Qinusty/rethinkdb,alash3al/rethinkdb,ajose01/rethinkdb,ajose01/rethinkdb,KSanthanam/rethinkdb,Qinusty/rethinkdb,victorbriz/rethinkdb,bchavez/rethinkdb,niieani/rethinkdb,yakovenkodenis/rethinkdb,wojons/rethinkdb,RubenKelevra/rethinkdb,spblightadv/rethinkdb,wojons/rethinkdb,AtnNn/rethinkdb,bchavez/rethinkdb,lenstr/rethinkdb,victorbriz/rethinkdb,tempbottle/rethinkdb,nviennot/rethinkdb,dparnell/rethinkdb,robertjpayne/rethinkdb,greyhwndz/rethinkdb,Qinusty/rethinkdb,nviennot/rethinkdb,lenstr/rethinkdb,gdi2290/rethinkdb,jmptrader/rethinkdb,Qinusty/rethinkdb,marshall007/rethinkdb,Qinusty/rethinkdb,bpradipt/rethinkdb,gdi2290/rethinkdb,Qinusty/rethinkdb,wujf/rethinkdb,jfriedly/rethinkdb,urandu/rethinkdb,greyhwndz/rethinkdb,jmptrader/rethinkdb,matthaywardwebdesign/rethinkdb,ayumilong/rethinkdb,grandquista/rethinkdb,mbroadst/rethinkdb,bpradipt/rethinkdb,sbusso/rethinkdb,mbroadst/rethinkdb,mcanthony/rethinkdb,mquandalle/rethinkdb,scripni/rethinkdb,mbroadst/rethinkdb,ayumilong/rethinkdb,mbroadst/rethinkdb,wujf/rethinkdb,4talesa/rethinkdb,AtnNn/rethinkdb,JackieXie168/rethinkdb,victorbriz/rethinkdb,KSanthanam/rethinkdb,gavioto/rethinkdb,eliangidoni/rethinkdb,KSanthanam/rethinkdb,mquandalle/rethinkdb,marshall007/rethinkdb,mcanthony/rethinkdb,ajose01/rethinkdb,victorbriz/rethinkdb,yaolinz/rethinkdb,greyhwndz/rethinkdb,eliangidoni/rethinkdb,JackieXie168/rethinkdb,mbroadst/rethinkdb,wkennington/rethinkdb,marshall007/rethinkdb,grandquista/rethinkdb,AtnNn/rethinkdb,mquandalle/rethinkdb,urandu/rethinkdb,elkingtonmcb/rethinkdb,sontek/rethinkdb,alash3al/rethinkdb,yakovenkodenis/rethinkdb,JackieXie168/rethinkdb,sebadiaz/rethinkdb,elkingtonmcb/rethinkdb,captainpete/rethinkdb,AntouanK/rethinkdb,wujf/rethinkdb,jesseditson/rethinkdb,wojons/rethinkdb,dparnell/rethinkdb,tempbottle/rethinkdb,marshall007/rethinkdb,wujf/rethinkdb,RubenKelevra/rethinkdb,yaolinz/rethinkdb,JackieXie168/rethinkdb,alash3al/rethinkdb,eliangidoni/rethinkdb,dparnell/rethinkdb,sebadiaz/rethinkdb,mcanthony/rethinkdb,tempbottle/rethinkdb,catroot/rethinkdb,AntouanK/rethinkdb,eliangidoni/rethinkdb,jfriedly/rethinkdb,sebadiaz/rethinkdb,urandu/rethinkdb,yakovenkodenis/rethinkdb,JackieXie168/rethinkdb,pap/rethinkdb,elkingtonmcb/rethinkdb,mcanthony/rethinkdb,ayumilong/rethinkdb,bpradipt/rethinkdb,matthaywardwebdesign/rethinkdb,wojons/rethinkdb,matthaywardwebdesign/rethinkdb,AntouanK/rethinkdb,mquandalle/rethinkdb,tempbottle/rethinkdb,eliangidoni/rethinkdb,spblightadv/rethinkdb,gavioto/rethinkdb,sebadiaz/rethinkdb,ayumilong/rethinkdb,captainpete/rethinkdb,lenstr/rethinkdb,elkingtonmcb/rethinkdb,grandquista/rethinkdb,pap/rethinkdb,yakovenkodenis/rethinkdb,lenstr/rethinkdb,sbusso/rethinkdb,bchavez/rethinkdb,nviennot/rethinkdb,pap/rethinkdb,4talesa/rethinkdb,KSanthanam/rethinkdb,gdi2290/rethinkdb,KSanthanam/rethinkdb,wujf/rethinkdb,wkennington/rethinkdb,tempbottle/rethinkdb,urandu/rethinkdb,captainpete/rethinkdb,grandquista/rethinkdb,catroot/rethinkdb,AntouanK/rethinkdb,jmptrader/rethinkdb,rrampage/rethinkdb,yaolinz/rethinkdb,captainpete/rethinkdb,robertjpayne/rethinkdb,JackieXie168/rethinkdb,mquandalle/rethinkdb,jesseditson/rethinkdb,wojons/rethinkdb,AtnNn/rethinkdb,victorbriz/rethinkdb,dparnell/rethinkdb,victorbriz/rethinkdb,robertjpayne/rethinkdb,AtnNn/rethinkdb,Wilbeibi/rethinkdb,urandu/rethinkdb,robertjpayne/rethinkdb,RubenKelevra/rethinkdb,mbroadst/rethinkdb,bpradipt/rethinkdb,ajose01/rethinkdb,RubenKelevra/rethinkdb,nviennot/rethinkdb,grandquista/rethinkdb,wojons/rethinkdb,gdi2290/rethinkdb,jfriedly/rethinkdb,4talesa/rethinkdb,bpradipt/rethinkdb,wkennington/rethinkdb,sontek/rethinkdb,gavioto/rethinkdb,sebadiaz/rethinkdb,mquandalle/rethinkdb,losywee/rethinkdb,sbusso/rethinkdb,alash3al/rethinkdb,spblightadv/rethinkdb,scripni/rethinkdb,yaolinz/rethinkdb,Wilbeibi/rethinkdb,lenstr/rethinkdb,Qinusty/rethinkdb,victorbriz/rethinkdb,4talesa/rethinkdb,Wilbeibi/rethinkdb,mcanthony/rethinkdb,rrampage/rethinkdb,elkingtonmcb/rethinkdb,pap/rethinkdb,greyhwndz/rethinkdb,alash3al/rethinkdb,scripni/rethinkdb,niieani/rethinkdb,losywee/rethinkdb,sbusso/rethinkdb,lenstr/rethinkdb,niieani/rethinkdb,niieani/rethinkdb,losywee/rethinkdb,Wilbeibi/rethinkdb,rrampage/rethinkdb,sebadiaz/rethinkdb,tempbottle/rethinkdb,alash3al/rethinkdb,dparnell/rethinkdb,sbusso/rethinkdb,mbroadst/rethinkdb,captainpete/rethinkdb,marshall007/rethinkdb,spblightadv/rethinkdb,bchavez/rethinkdb,rrampage/rethinkdb,RubenKelevra/rethinkdb,bchavez/rethinkdb,jesseditson/rethinkdb,gavioto/rethinkdb,matthaywardwebdesign/rethinkdb,pap/rethinkdb,greyhwndz/rethinkdb,catroot/rethinkdb,jfriedly/rethinkdb,matthaywardwebdesign/rethinkdb,mquandalle/rethinkdb,marshall007/rethinkdb,wojons/rethinkdb,niieani/rethinkdb,Wilbeibi/rethinkdb,gdi2290/rethinkdb,pap/rethinkdb,jmptrader/rethinkdb,bchavez/rethinkdb,AtnNn/rethinkdb,losywee/rethinkdb,4talesa/rethinkdb,ajose01/rethinkdb,sontek/rethinkdb,dparnell/rethinkdb,robertjpayne/rethinkdb,robertjpayne/rethinkdb,matthaywardwebdesign/rethinkdb,Wilbeibi/rethinkdb,AntouanK/rethinkdb,jfriedly/rethinkdb,yaolinz/rethinkdb,jmptrader/rethinkdb,ajose01/rethinkdb,ayumilong/rethinkdb,nviennot/rethinkdb,4talesa/rethinkdb,JackieXie168/rethinkdb,jesseditson/rethinkdb,losywee/rethinkdb,gdi2290/rethinkdb,wkennington/rethinkdb,JackieXie168/rethinkdb,losywee/rethinkdb,yaolinz/rethinkdb,rrampage/rethinkdb,niieani/rethinkdb,sontek/rethinkdb,sebadiaz/rethinkdb,scripni/rethinkdb,sebadiaz/rethinkdb,jfriedly/rethinkdb,ajose01/rethinkdb,grandquista/rethinkdb,matthaywardwebdesign/rethinkdb,bchavez/rethinkdb,yakovenkodenis/rethinkdb,captainpete/rethinkdb,tempbottle/rethinkdb,dparnell/rethinkdb,mcanthony/rethinkdb,Qinusty/rethinkdb,sbusso/rethinkdb,wujf/rethinkdb,wkennington/rethinkdb,urandu/rethinkdb,grandquista/rethinkdb,rrampage/rethinkdb,robertjpayne/rethinkdb,niieani/rethinkdb,jmptrader/rethinkdb,jfriedly/rethinkdb,captainpete/rethinkdb,gavioto/rethinkdb,gavioto/rethinkdb,eliangidoni/rethinkdb,robertjpayne/rethinkdb,niieani/rethinkdb,greyhwndz/rethinkdb,jesseditson/rethinkdb,bchavez/rethinkdb,bpradipt/rethinkdb,gavioto/rethinkdb,sontek/rethinkdb,gavioto/rethinkdb,nviennot/rethinkdb,AtnNn/rethinkdb,wkennington/rethinkdb,jesseditson/rethinkdb,elkingtonmcb/rethinkdb,spblightadv/rethinkdb,RubenKelevra/rethinkdb,4talesa/rethinkdb,spblightadv/rethinkdb,catroot/rethinkdb,greyhwndz/rethinkdb,KSanthanam/rethinkdb,wojons/rethinkdb,nviennot/rethinkdb,urandu/rethinkdb,marshall007/rethinkdb,bpradipt/rethinkdb,AntouanK/rethinkdb,spblightadv/rethinkdb,mbroadst/rethinkdb,urandu/rethinkdb,elkingtonmcb/rethinkdb,bpradipt/rethinkdb,dparnell/rethinkdb,losywee/rethinkdb,grandquista/rethinkdb,bpradipt/rethinkdb,AntouanK/rethinkdb,wkennington/rethinkdb,eliangidoni/rethinkdb,rrampage/rethinkdb,scripni/rethinkdb,yakovenkodenis/rethinkdb,mbroadst/rethinkdb,nviennot/rethinkdb,pap/rethinkdb,elkingtonmcb/rethinkdb,ajose01/rethinkdb,Wilbeibi/rethinkdb,rrampage/rethinkdb,spblightadv/rethinkdb,KSanthanam/rethinkdb,4talesa/rethinkdb,wkennington/rethinkdb,lenstr/rethinkdb,gdi2290/rethinkdb,scripni/rethinkdb,alash3al/rethinkdb,sbusso/rethinkdb,AtnNn/rethinkdb,jmptrader/rethinkdb,sontek/rethinkdb,RubenKelevra/rethinkdb,jfriedly/rethinkdb,mcanthony/rethinkdb,pap/rethinkdb,yakovenkodenis/rethinkdb,ayumilong/rethinkdb,sontek/rethinkdb,alash3al/rethinkdb,Wilbeibi/rethinkdb,mquandalle/rethinkdb,yakovenkodenis/rethinkdb,RubenKelevra/rethinkdb,eliangidoni/rethinkdb,sontek/rethinkdb,wujf/rethinkdb,ayumilong/rethinkdb,captainpete/rethinkdb,matthaywardwebdesign/rethinkdb,JackieXie168/rethinkdb