Video: Txoj kab nqes b1 sawv cev li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov txoj kab nqes ( b 1 ua ) sawv cev . qhov nruab nrab hloov hauv Y rau ib chav hloov pauv hauv X. Cov coefficient ntawm kev txiav txim qhia peb. qhov ratio ntawm tag nrho variation uas yog piav qhia. Lub zog ntawm kev sib raug zoo ntawm ob tus lej tuaj yeem raug ntsuas los ntawm qhov.
Ces, koj txhais li cas b1 hauv regression?
b 1 ua - Qhov no yog SLOPE ntawm lub regression kab. Yog li qhov no yog tus nqi uas Y sib txawv (dependent) yuav hloov rau txhua 1 chav hloov pauv hauv X sib txawv. b0 - Qhov no yog qhov cuam tshuam ntawm qhov regression kab nrog y-axis. Hauv lwm lo lus nws yog tus nqi ntawm Y yog tus nqi ntawm X = 0.
Tsis tas li ntawd, puas yog qhov regression coefficient Qhov nqes hav? Regression nqes hav : Kev Ntseeg Siab Tshaj. qha b0 yog b1 yog cov txoj kab nqes (tseem hu ua regression coefficient ), x yog tus nqi ntawm qhov sib txawv ntawm tus kheej, thiab ŷ yog qhov kwv yees tus nqi ntawm qhov sib txawv.
Hais txog qhov no, qhov nqes hav coefficient qhia peb li cas?
Cov txoj kab nqes coefficient feem ntau yog hais txog cov coefficient ntawm ib qho kev hloov pauv ywj pheej, x, hauv qhov sib npaug regression. Nws qhia qhov kev hloov pauv hauv y uas tuaj yeem xav tias yuav tshwm sim los ntawm qhov nce hauv x.
Koj pom txoj kab nqes hauv stats li cas?
Nco ntsoov los ntawm algebra, uas txoj kab nqes yog "m" hauv cov mis y = mx + b. Nyob rau hauv lub linear regression formula, lub txoj kab nqes yog a hauv kab zauv y' = b + ax. Lawv yeej yog tib yam nkaus. Yog li yog tias koj nug nrhiav linear regression txoj kab nqes , txhua yam koj yuav tsum ua yog nrhiav b ib yam li koj xav nrhiav m.
Pom zoo:
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