Yuav ua li cas rau beta thaum alpha nce?
Yuav ua li cas rau beta thaum alpha nce?

Video: Yuav ua li cas rau beta thaum alpha nce?

Video: Yuav ua li cas rau beta thaum alpha nce?
Video: Xa tau tub, xav tau ntshai yuav ua li cas. 2024, Kaum ib hlis
Anonim

Thaum koj ua li no, alpha txo, zog (1 - beta ) txo, thiab beta nce . Ntawm qhov tod tes, txav tib txoj kab ntsug mus rau sab laug nce alpha , nce lub zog, thiab txo qis beta . Muab tso rau lwm txoj kev, nce hauv alpha nce lub zog thiab txo qis hauv alpha txo hwj chim.

Ib yam li ntawd ib tug yuav nug, yuav ua li cas tshwm sim rau beta raws li tus qauv loj nce?

Nce beta , qhov tshwm sim ntawm hom II yuam kev. Cov lus teb raug yog (C). Ua piv txwv loj ua rau qhov kev ntsuam xyuas hypothesis ntau rhiab heev - ntau dua yuav tsis lees paub qhov kev xav tsis tseeb thaum nws yog, qhov tseeb, tsis tseeb.

Tsis tas li ntawd, kev sib raug zoo ntawm alpha thiab beta hauv kev txheeb cais yog dab tsi? Alpha qib thiab beta qib muaj feem cuam tshuam: Ib alpha theem yog qhov tshwm sim ntawm hom I yuam kev, lossis tsis lees txais qhov kev xav tsis zoo thaum nws muaj tseeb. A beta qib, feem ntau tsuas yog hu ua beta (β), yog qhov sib txawv; qhov tshwm sim ntawm kev lees txais qhov null hypothesis thaum nws tsis tseeb.

Kuj paub, yuav ua li cas thaum koj nce alpha?

Yog alpha sib npaug 0.05, ces koj qhov kev ntseeg siab yog 0.95. Yog koj nce alpha , koj ob leeg nce qhov tshwm sim ntawm qhov tsis raug tsis lees paub qhov kev xav tsis tseeb thiab tseem txo koj qib kev ntseeg siab.

Lub hwj chim cuam tshuam li cas rau Alpha?

Qhov tseem ceeb theem α ntawm qhov kev xeem. Yog tias tag nrho lwm yam tau tuav tas li, tom qab ntawd raws li α nce, yog li ua tus hwj chim ntawm qhov kev xeem. Qhov no yog vim qhov loj dua α txhais tau hais tias thaj tsam tsis lees paub ntau dua rau qhov kev sim thiab yog li qhov muaj feem ntau dua ntawm kev tsis lees paub qhov kev xav tsis zoo. Qhov ntawd txhais mus rau qhov kev sim siab dua.

Pom zoo: