Video: Lub koom haum linear txhais li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A linear kev sib raug zoo (los yog linear koom haum ) yog a statistical lo lus siv los piav txog txoj kab ncaj nraim kev sib raug zoo nruab nrab ntawm qhov sib txawv thiab qhov tsis tu ncua.
Ntxiv mus, koj piav qhia txog kev sib raug zoo li cas?
A kab tawm equation nyob rau hauv ob lub variables piav txog a kev sib raug zoo nyob rau hauv uas tus nqi ntawm ib qho ntawm cov variables nyob ntawm tus nqi ntawm lwm qhov sib txawv. Hauv ib kab tawm Qhov sib npaug ntawm x thiab y, x yog hu ua x yog qhov txawv txav thiab y nyob ntawm nws. Tom qab ntawd koj tuaj yeem npaj cov ntsiab lus uas muaj npe los ntawm txhua tus khub (x, y) ntawm daim phiaj sib koom tes.
Ib yam li ntawd, lub koom haum zoo linear yog dab tsi? Qhov tawg ntawm txoj kab yog me me, yog li muaj zog linear kev sib raug zoo . Txoj kab nqes ntawm txoj kab yog zoo (cov nqi me me ntawm X sib raug rau qhov me me ntawm Y; qhov loj ntawm X sib raug rau qhov loj ntawm Y), yog li muaj zoo kev sib raug zoo (uas yog, a zoo correlation) ntawm X thiab Y.
Nyob rau hauv tas li ntawd, dab tsi yog ib tug linear koom haum nyob rau hauv ib tug scatter plot?
Scatter zaj dab neeg ntawm ib qho zoo heev linear kev sib raug zoo . Daim duab qhia tau hais tias muaj kev xav zoo heev rau X thiab Y rau ob qho tib si nce saum lawv txhais tau tias lossis poob qis dua lawv txhais tau tib lub sijhawm. Txoj kab ncaj nraim yog txoj kab sib txawv, tsim los kom ze li sai tau rau tag nrho cov ntaub ntawv cov ntsiab lus.
Dab tsi yog linear kev sib raug zoo hauv kev tshawb fawb?
A linear kev sib raug zoo yog ib qhov uas nce los yog txo ib tug kuj nce mus nce los n lub sij hawm yuav ua rau ib tug coj mus nce los yog txo ntawm n lub sij hawm nyob rau hauv lwm yam kuj txawv thiab. Hauv cov lus yooj yim, yog tias koj muab ob npaug rau ib qho sib txawv, lwm qhov yuav muab ob npaug thiab.
Pom zoo:
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