P 0.001 txhais li cas?
P 0.001 txhais li cas?

Video: P 0.001 txhais li cas?

Video: P 0.001 txhais li cas?
Video: txhais kev npau suav 2024, Kaum ib hlis
Anonim

P < 0.001 . Cov kws sau ntawv feem ntau xa mus rau qhov tseem ceeb hauv statistically P <0.05 thiab statistically tseem ceeb heev li P < 0.001 (tsawg dua ib ntawm ib txhiab lub sijhawm ua yuam kev). Lub hnub qub system zam lub sij hawm woolly "tseem ceeb".

Hais txog qhov no, P 0.01 txhais li cas?

Cov p -value yog ib qho kev ntsuas uas peb muaj pov thawj ntau npaum li cas tawm tsam qhov kev xav tsis tseeb. A p -tus nqi tsawg dua 0.01 yuav nyob rau hauv ib txwm muaj txhais tau tias tias muaj ntau yam pov thawj tawm tsam qhov kev xav tsis tseeb.

Ib tug kuj yuav nug, p values txhais li cas? Hauv kev txheeb cais, cov p - tus nqi yog qhov tshwm sim ntawm qhov tau txais cov txiaj ntsig pom ntawm qhov kev sim, xav tias qhov kev xav tsis tseeb yog qhov tseeb. Ib qho me me p - tus nqi txhais tau tias tias muaj pov thawj muaj zog ntxiv rau kev pom zoo ntawm lwm txoj kev xav.

Ib yam li ntawd, koj tuaj yeem nug, P 0.0001 puas tseem ceeb?

Nws yog ib txwm tham txog qhov tshwm sim tseem ceeb ntawm qee theem, feem ntau 0.05, 0.025 lossis 0.01 thiab lwm yam, yog li qhov txiaj ntsig no tuaj yeem raug xa mus rau tseem ceeb heev , los yog, feem ntau, tseem ceeb ntawm 0.001 (hais).

P 0.05 txhais li cas?

P > 0.05 yog probability tias qhov null hypothesis muaj tseeb. 1 mins ua P tus nqi yog cov probability tias lwm txoj kev xav yog qhov tseeb. Cov txiaj ntsig tseem ceeb ntawm kev xeem ( P ≦ 0.05 ) txhais tau tias hais tias qhov kev xeem hypothesis yog cuav lossis yuav tsum tsis lees paub. P tus nqi ntau dua 0,05 ua tias tsis muaj kev cuam tshuam.

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