Dab tsi tau hais los ntawm qhov kev xav tsis zoo rau kev xeem Friedman?
Dab tsi tau hais los ntawm qhov kev xav tsis zoo rau kev xeem Friedman?

Video: Dab tsi tau hais los ntawm qhov kev xav tsis zoo rau kev xeem Friedman?

Video: Dab tsi tau hais los ntawm qhov kev xav tsis zoo rau kev xeem Friedman?
Video: 5 hom hluas nkauj (tsis zoo yuav ua poj niam). 2024, Kaum ib hlis
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Cov tsis muaj kev xav rau kev sim Friedman yog tias tsis muaj qhov sib txawv ntawm qhov sib txawv. Yog hais tias qhov kev kwv yees yuav muaj tsawg (P tsawg dua qib xaiv qhov tseem ceeb) the tsis muaj - kev xav raug tsis lees paub thiab nws tuaj yeem txiav txim siab tias tsawg kawg 2 ntawm qhov sib txawv muaj qhov sib txawv ntawm ib leeg.

Yog li ntawd, dab tsi yog Friedman qhov ntsuas pom?

Cov Friedman xeem yog ib qho tsis-parametric txheeb cais xeem tsim los ntawm Milton Friedman . Zoo ib yam li parametric rov ntsuas ANOVA, nws yog siv rau ntes kev sib txawv ntawm kev kho mob hla ntau yam xeem kev sim siab.

Tsis tas li, dab tsi yog qhov piv txwv tsis pom kev? A null hypothesis yog a kev xav uas hais tias tsis muaj qhov tseem ceeb txheeb cais ntawm ob qhov kev hloov pauv hauv kev xav . Hauv piv txwv , Susie tus tsis muaj hypothesis yuav yog ib yam zoo li no: Tsis muaj kev sib raug zoo ntawm cov dej uas kuv pub cov paj thiab kev loj hlob ntawm cov paj.

Ib yam li ntawd, dab tsi yog qhov kev xav tsis meej hauv kev txheeb cais?

A tsis muaj hypothesis yog ib hom kev xav siv hauv txheeb cais uas tawm tswv yim tias tsis yog txheeb cais Qhov tseem ceeb muaj nyob rau hauv ib pawg ntawm kev soj ntsuam. Cov tsis muaj hypothesis sim los qhia tias tsis muaj qhov sib txawv ntawm qhov sib txawv lossis ib qho sib txawv tsis txawv ntawm nws lub ntsiab lus.

Koj txhais li cas qhov tsis lees paub qhov kev xav tsis raug?

Thaum qhov tshwm sim tus nqi qis dua qib α, cov nyhuv yog qhov tseem ceeb thiab cov tsis muaj hypothesis yog tsis lees txais Txawm li cas los xij, tsis yog txhua qhov teeb meem tseem ceeb hauv kev txheeb cais yuav tsum raug kho tib yam nkaus. Piv txwv li, koj yuav tsum muaj kev ntseeg siab tsawg uas cov tsis muaj hypothesis yog cuav yog p = 0.049 dua p = 0.003.

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