Video: Dab tsi yog txoj hauv kev los qhia cov ntaub ntawv tsis sib xws?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Cov txoj hauv kev los qhia cov ntaub ntawv univariate yog Tabulated form. Lub hom phiaj tseem ceeb yog sawv cev rau cov ntaub ntawv hauv a txoj kev thiaj li nrhiav tau cov qauv. Muaj ntau txoj kev xaiv los piav qhia univariate cov ntaub ntawv xws li bar kab kos, histograms, daim duab ncuav qab zib, ntau zaus polygons thiab zaus faib cov rooj.
Hais txog qhov no, cov ntaub ntawv univariate tshwm sim li cas?
Univariate yog ib lo lus uas feem ntau siv hauv kev txheeb cais los piav txog hom cov ntaub ntawv uas muaj kev soj ntsuam ntawm tsuas yog ib tus yam ntxwv lossis tus cwj pwm. Zoo li lwm tus cov ntaub ntawv , univariate cov ntaub ntawv tuaj yeem pom tau siv cov duab, duab lossis lwm yam cuab yeej tshuaj xyuas tom qab lub cov ntaub ntawv yog ntsuas, sau, qhia, thiab soj ntsuam.
koj txhais li cas los ntawm univariate? Hauv lej, ib leeg yog hais txog ib qho kev qhia, kab zauv, kev ua haujlwm lossis polynomial ntawm tsuas yog ib qho sib txawv. Cov khoom ntawm ib qho ntawm cov hom no uas muaj ntau tshaj ib qho kev sib txawv yuav raug hu ua multivariate. Piv txwv li, ib leeg cov ntaub ntawv yog tsim los ntawm ib qho scalar tivthaiv.
Ib yam li ntawd, ib qho piv txwv ntawm cov ntaub ntawv univariate yog dab tsi?
Univariate txhais tau tias "ib qho hloov pauv" (ib hom cov ntaub ntawv ). Piv txwv : Koj hnyav cov menyuam dev thiab tau txais cov txiaj ntsig no: 2.5, 3.5, 3.3, 3.1, 2.6, 3.6, 2.4. Qhov "ib qho sib txawv" yog Puppy Weight. Yog tias koj muaj ob txheej cov ntaub ntawv , xws li ice cream muag vs kub, nws yog hu ua "Bivariate Cov ntaub ntawv ".
Dab tsi yog cov phiaj xwm univariate?
A univariate zaj qhia cov ntaub ntawv thiab xaus nws qhov kev faib tawm. Dot zaj . Ib dot zaj , kuj hu ua strip zaj , qhia txog tus kheej kev soj ntsuam. Lub thawv zaj . Ib lub thawv zaj qhia txog tsib lub ntsiab lus ntawm cov ntaub ntawv - qhov tsawg kawg nkaus, thawj quartile, nruab nrab, thib peb quartile, thiab siab kawg.
Pom zoo:
Dab tsi yog qhov sib txawv ntawm pab pawg cov ntaub ntawv thiab cov ntaub ntawv tsis yog pawg?
Ob leeg yog cov ntaub ntawv muaj txiaj ntsig ntawm cov ntaub ntawv tab sis qhov sib txawv ntawm lawv yog cov ntaub ntawv tsis muaj ntaub ntawv yog rawdata. Qhov no txhais tau hais tias nws nyuam qhuav tau sau tab sis tsis txheeb rau hauv ib pawg lossis cov chav kawm. Ntawm qhov tod tes, groupeddata yog cov ntaub ntawv uas tau teeb tsa ua pawg los ntawm cov ntaub ntawv nyoos
Dab tsi yog qhov sib txawv ntawm cov ntaub ntawv sib sau ua ke thiab cov ntaub ntawv tsis sib xws?
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Dab tsi yog qhov sib txawv tseem ceeb ntawm kev sib txuas lus tsis sib xws thiab kev sib txuas lus taw qhia?
1. Hauv kev sib txuas lus tsis muaj kev sib txuas lus tsis tas yuav tsim kev sib txuas ntawm qhov chaw (sender) thiab qhov chaw (receiver). Tab sis nyob rau hauv kev sib txuas-taw qhia kev sib txuas lus kev sib txuas lus yuav tsum tau tsim ua ntej hloov cov ntaub ntawv