若a=10;b=10;c=12;d=5,靈敏度、特異度、假陽(yáng)性率和假陰性率分別是多少?()
A.45.5%;33.3%;54.5%;66.7%B.45.5%;54.5%;66.7%;33.3%C.45.5%;66.7%;33.3%;54.5%D.66.7%;33.3%;54.5%;45.5%
關(guān)于混淆矩陣,下列說(shuō)法錯(cuò)誤的是()。
A.靈敏度=a/(a+c)B.假陽(yáng)性率=b/(b+d)C.ROC曲線橫坐標(biāo)是靈敏度,縱坐標(biāo)是特異度D.臨界值的確定可以用約登指數(shù)
A.ARIMA(0,1,0)Yt=Yt-1B.ARIMA(0,1,0)Yt=Yt-1+EtC.ARIMA(0,1,0)Yt=U+Yt-1+EtD.ARIMA(0,1,0)Yt=U+Yt-1