Video: Thaum twg koj yuav tsum siv correlation thiab thaum twg koj yuav tsum siv yooj yim linear regression?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Regression yog qhov tseem ceeb siv rau tsim qauv / sib npaug rau kwv yees cov lus teb tseem ceeb, Y, los ntawm cov txheej txheem kwv yees (X) hloov pauv. Kev sib txheeb yog qhov tseem ceeb siv rau sai thiab concisely summarize cov kev taw qhia thiab lub zog ntawm kev sib raug zoo ntawm ib tug txheej ntawm 2 los yog ntau tshaj tus lej sib txawv.
Kuj paub yog, thaum twg koj yuav tsum siv linear regression?
Peb qhov loj siv rau regression kev tsom xam yog (1) txiav txim siab lub zog ntawm kev kwv yees, (2) kev kwv yees qhov tshwm sim, thiab (3) kev kwv yees. Ua ntej, lub regression tej zaum yuav siv tau rau txheeb xyuas lub zog ntawm cov txiaj ntsig uas qhov hloov pauv ywj pheej muaj nyob ntawm qhov sib txawv.
Tsis tas li ntawd, thaum twg yuav tsum tau siv kev sib raug zoo? Kev sib txheeb yog siv los piav txog txoj kev sib raug zoo ntawm ob qhov sib txawv tsis tu ncua (piv txwv li, qhov siab thiab qhov hnyav). Feem ntau, kev sib raug zoo nyiam ua siv thaum tsis muaj kev txheeb xyuas qhov txawv txav. Nws ntsuas lub zog (zoo) thiab kev taw qhia ntawm kev sib raug zoo ntawm ob lossis ntau qhov sib txawv.
Ib tug kuj yuav nug, qhov txawv ntawm qhov yooj yim linear regression thiab correlation yog dab tsi?
Regression piav qhia txog yuav ua li cas ib qho kev sib txawv ntawm tus lej muaj feem cuam tshuam nrog qhov sib txawv ntawm qhov sib txawv. Kev sib txheeb yog siv los sawv cev kab tawm kev sib raug zoo nruab nrab ob qhov sib txawv. Ntawm qhov tsis sib xws, regression yog siv los ua kom haum cov kab zoo tshaj plaws thiab kwv yees ib qho sib txawv ntawm lub hauv paus ntawm lwm variable.
Uas muaj tseeb txog Pearson correlation thiab yooj yim linear regression?
Pearson Kev sib raug zoo thiab Linear Regression . A kev sib raug zoo tsom xam muab cov ntaub ntawv ntawm lub zog thiab kev coj ntawm lub kab tawm kev sib raug zoo ntawm ob qhov sib txawv, thaum a yooj yim linear regression tsom xam kwv yees parameter hauv a kab tawm equation uas tuaj yeem siv los kwv yees qhov tseem ceeb ntawm ib qho kev sib txawv raws li lwm qhov
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