Video: T ratio yog dab tsi nyob rau hauv ib tug regression?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov t - piv yog qhov kwv yees muab faib los ntawm tus qauv yuam kev. Nrog rau tus qauv loj txaus, t - piv ntau dua 1.96 (hauv tus nqi tiag) qhia tias koj tus coefficient yog qhov sib txawv ntawm 0 ntawm 95% kev ntseeg siab.
Ua raws li qhov no hauv kev txiav txim siab, T tus nqi hauv regression yog dab tsi?
Cov t statistic yog tus coefficient muab faib los ntawm nws tus qauv yuam kev. Koj regression software piv cov t statistic ntawm koj qhov sib txawv nrog tus nqi hauv tub kawm ntawv t faib los txiav txim P tus nqi , uas yog tus lej uas koj yuav tsum tau saib tiag tiag.
Tsis tas li, vim li cas peb thiaj siv t test hauv regression? t Tests . Cov kuaj yog siv mus ua hypothesis kuaj ntawm regression coefficients tau nyob rau hauv yooj yim linear regression . A txheeb cais raws li kev faib tawm yog siv rau xeem ob-sided hypothesis hais tias qhov tseeb txoj kab nqes,, sib npaug qee tus nqi tas li,.
Hauv qhov no, t statistic txhais li cas?
Hauv txheeb cais , cov t - statistic yog qhov piv ntawm qhov kev tawm mus ntawm qhov kwv yees tus nqi ntawm ib qho parameter los ntawm nws qhov kev xav txog tus nqi rau nws tus qauv yuam kev. Piv txwv li, nws yog siv los kwv yees cov pejxeem txhais tau tias los ntawm kev faib cov qauv ntawm cov qauv txhais tau tias yog hais tias cov pejxeem standard deviation yog tsis paub.
Koj txhais li cas F ratio hauv regression?
Txhais lus tag nrho F -test ntawm Qhov tseem ceeb Muab piv rau p-tus nqi rau lub F -test rau koj qhov tseem ceeb qib. Yog tias tus nqi p-nqi tsawg dua qhov qhov tseem ceeb theem, koj cov qauv ntaub ntawv muab pov thawj txaus los txiav txim siab tias koj regression qauv haum rau cov ntaub ntawv zoo dua cov qauv uas tsis muaj kev ywj pheej sib txawv.
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