Puas yog hom 1 yuam kev phem dua li Hom 2?
Puas yog hom 1 yuam kev phem dua li Hom 2?

Video: Puas yog hom 1 yuam kev phem dua li Hom 2?

Video: Puas yog hom 1 yuam kev phem dua li Hom 2?
Video: puas yog koj ntshai yuav kuv ntsaim vaj 2022 -2023 2024, Kaum ib hlis
Anonim

Hom I thiab II yuam kev ( 2 ntawm 2 ) A Hom I yuam kev , ntawm qhov tod tes, yog ib qho yuam kev hauv txhua qhov kev xav ntawm lo lus. Ib qho kev txiav txim siab tau kos tias qhov kev xav tsis tseeb yog cuav thaum, qhov tseeb, nws yog qhov tseeb. Yog li ntawd, Hom I yuam kev feem ntau suav hais tias hnyav dua dua li hom II yuam kev.

Tsuas yog li ntawd, qhov txawv ntawm Hom 1 thiab Hom 2 yuam kev yog dab tsi?

Nyob rau hauv statistical hypothesis test, a hom 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).

Tsis tas li ntawd, hom kev ua yuam kev twg yog qhov txaus ntshai dua? Hom I yuam kev yog thaum koj tsis lees paub qhov tseeb null hypothesis thiab yog qhov yuam kev loj dua. Nws tseem yog hu ua 'dawb zoo'. Qhov tshwm sim ntawm kev ua qhov yuam kev no yog alpha - theem ntawm qhov tseem ceeb.

Kuj Paub, koj xav tias qhov twg yuav ua txhaum loj dua qhov yuam kev Hom I lossis Hom II thiab vim li cas?

Hom II yuam kev . Nrog rau Hom II yuam kev , muaj caij nyoog rau tsis lees paub qhov kev xav tsis tseeb tau ploj, thiab tsis muaj qhov xaus yog inferred los ntawm ib tug tsis-rejected null. Tab sis lub Hom Kuv yuam kev loj dua , vim koj tau yuam kev tsis lees paub qhov null hypothesis thiab thaum kawg tau thov qhov ntawd yog tsis muaj tseeb.

Hom kev ua yuam kev loj dua thiab vim li cas?

Feem ntau, a hom Kuv yuam kev raug txiav txim siab phem dua , rau ob qho laj thawj. Thaum koj muaj cov txiaj ntsig tseem ceeb, koj tau hais tias koj muaj kev tshawb pom. Koj tab tom tsis lees paub qhov kev xav tsis tseeb - yog tias koj tsis lees paub nws, qhov ntawd yog a hom Kuv yuam kev.

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