Cov txheej txheem:
![Koj yuav xam tus nqi cuav cuav li cas? Koj yuav xam tus nqi cuav cuav li cas?](https://i.answers-medical.com/preview/medical-health/13878150-how-do-you-calculate-a-false-positive-rate-j.webp)
Video: Koj yuav xam tus nqi cuav cuav li cas?
![Video: Koj yuav xam tus nqi cuav cuav li cas? Video: Koj yuav xam tus nqi cuav cuav li cas?](https://i.ytimg.com/vi/sg6YIv3R0lg/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2024-01-18 09:28
Lwm yam kev suav
- Tus nqi cuav cuav (α) = hom I yuam kev = 1 - qhov tshwj xeeb = FP / (FP + TN) = 180 / (180 + 1820) = 9%
- Cuav tsis zoo tus nqi (β) = hom II yuam kev = 1 - rhiab heev = FN / (TP + FN) = 10 / (20 + 10) = 33%
- Hwj chim = rhiab heev = 1 - β
Tsis tas li ntawd, tus lej cuav raug txhais li cas?
Hauv kev txheeb cais, thaum ua ntau yam kev sib piv, a cuav tsis zoo piv (tseem hu ua poob tawm lossis lub tswb dag piv) yog qhov tshwm sim ntawm kev tsis lees paub qhov kev xav tsis raug rau qhov kev sim tshwj xeeb. Cov tus nqi cuav cuav (los yog " cuav tswb tus nqi ") feem ntau yog hais txog kev cia siab ntawm cuav tsis zoo piv.
Kuj Paub, dab tsi yog qhov ntsuas tsis raug qhov tseeb? Hauv kev kho mob xeem , thiab ntau dua hauv kev faib tawm binary, a cuav tsis zoo yog qhov ua yuam kev hauv kev tshaj tawm cov ntaub ntawv uas a xeem tau tsis raug qhia tias muaj tus mob, xws li tus kab mob (tus tshwm sim yog zoo ), thaum qhov tseeb nws tsis nyob tam sim no, thaum a cuav tsis zoo yog qhov yuam kev uas a xeem tau
Yog li ntawd, dab tsi yog qhov piv txwv tsis zoo?
Cuav tsis zoo : Qhov tshwm sim uas qhia tias muaj xwm txheej tam sim no thaum nws tsis yog. Ib piv txwv ntawm a cuav tsis zoo yuav yog tias ib qho kev sim tshwj xeeb uas tsim los kuaj mob qog noj ntshav rov qab los zoo tshwm sim tab sis tus neeg tsis muaj mob qog noj ntshav.
Dab tsi yog txhais los ntawm qhov zoo tiag?
A muaj tseeb zoo yog qhov txiaj ntsig uas tus qauv raug kwv yees qhov tseeb zoo chav kawm Ib yam nkaus, a muaj tseeb tsis zoo yog qhov txiaj ntsig uas tus qauv raug kwv yees cov chav kawm tsis zoo. Thiab a cuav qhov tsis zoo yog qhov tshwm sim uas tus qauv ua piv txwv tsis raug rau chav kawm tsis zoo.
Pom zoo:
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