Dab tsi ua rau hom 2 yuam kev?
Dab tsi ua rau hom 2 yuam kev?

Video: Dab tsi ua rau hom 2 yuam kev?

Video: Dab tsi ua rau hom 2 yuam kev?
Video: Liam Neeg Yuam Kev...22.2.2022 2024, Kaum ib hlis
Anonim

A yam II yuam kev tshwm sim thaum lub null hypothesis yog cuav , tab sis erroneously tsis raug tso tseg. Cia kuv hais qhov no dua, a yam II yuam kev tshwm sim thaum lub null kev xav yog qhov tseeb cuav , tab sis tau txais qhov tseeb los ntawm kev sim.

Tsis tas li ntawd, koj yuav ua li cas kom tsis txhob hom 2 yuam kev?

  1. Nce tus qauv loj. Ib txoj hauv kev yooj yim tshaj plaws los ua kom lub zog ntawm qhov kev xeem yog kom nce tus qauv loj siv hauv kev sim.
  2. Nce qib tseem ceeb. Lwm txoj hauv kev yog xaiv cov qib siab ntawm qhov tseem ceeb.

Tsis tas li ntawd, qhov txawv ntawm Hom 1 thiab Hom 2 yuam kev yog dab tsi? Nyob rau hauv statistical hypothesis test, a yam Kuv yuam kev yog qhov tsis lees paub qhov tseeb null hypothesis (tseem hu ua "false positive" nrhiav lossis xaus), thaum yam II yuam kev yog qhov tsis lees paub ntawm qhov tsis tseeb qhov kev xav tsis tseeb (tseem hu ua "false negative" nrhiav lossis xaus).

Kuj nug, dab tsi ua rau hom 1 yuam kev?

Feem ntau, a Hom Kuv yuam kev tshwm sim thaum qhov kev ntsuam xyuas tseem ceeb ua rau tsis lees paub qhov tseeb null hypothesis. Los ntawm ib qho kev pom zoo, yog tias tus nqi ntawm qhov tshwm sim yog qis dua 0.05, ces qhov kev xav tsis zoo yog tsis lees paub.

Hom 2 yuam kev piv txwv yog dab tsi?

A Hom II yuam kev tau cog lus thaum peb tsis ntseeg qhov tseeb. Khoom qab zib Crush dabneeg. Txuas ntxiv peb tus tswv yug yaj thiab hma piv txwv . Ntxiv dua thiab, peb qhov kev xav tsis tseeb yog tias tsis muaj "tsis muaj hma tam sim no." A yam II yuam kev (lossis cuav tsis zoo) yuav ua tsis muaj dab tsi (tsis yog "hma quaj") thaum muaj hma tam sim no.

Pom zoo: