Video: Cov qhab-nees puas yog tus thawj lossis nominal?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
[ Ordinal ] Chav kawm qib (A, B, C, D) yog cov cim qhia ntawm tus menyuam kawm ntawv qhov kev ua tau zoo thiab raug txiav txim, yog li qhov no yog ib qho piv txwv ntawm kev cai qib ntsuas.
Ntxiv mus, cov ntawv qib nominal lossis ordinal?
Cov kev cai theem ntawm kev ntsuas yog ib tug sophisticated scale ntau tshaj qhov npe qib. Nov yog qee qhov piv txwv ntawm kev cai cov ntaub ntawv qib: Kev txiav txim tiav hauv kev sib tw lossis kev sib tw. Cov ntawv qib : A, B, C, D, lossis F.
Ib yam li ntawd, hom ntaub ntawv twg yog qib? Ordinal (ordered) variables, e.g., qib, theem nyiaj tau los, qib tsev kawm ntawv. Discrete interval variables uas tsuas muaj ob peb qhov tseem ceeb, xws li, tus naj npawb ntawm cov sij hawm sib yuav. Kev hloov pauv tsis tu ncua tau muab faib ua ntau pawg, piv txwv li, cov nyiaj tau los pab pawg ua haujlwm, qib ntshav siab (ib txwm, siab-ib txwm thiab lwm yam)
Tsis tas li ntawd, qhov txawv ntawm nominal thiab ordinal scale yog dab tsi?
Nominal nplai yog npe nplai , qhov twg cov hloov pauv tsuas yog "npe" lossis sau npe, tsis muaj kev txiav txim tshwj xeeb. Ordinal nplai muaj tag nrho nws cov variables hauv a tshwj xeeb kev txiav txim, tshaj li tsuas yog naming lawv. Lub sijhawm nplai muab cov ntawv sau, xaj, nrog rau, ib lub sijhawm tshwj xeeb nruab nrab txhua tus ntawm nws cov kev xaiv sib txawv.
Puas yog suav cov ntaub ntawv nominal lossis ordinal?
Kev kho mob ntawm statistical suav cov ntaub ntawv nws txawv ntawm qhov ntawm binary cov ntaub ntawv , nyob rau hauv uas cov kev soj ntsuam yuav coj tsuas yog ob qhov tseem ceeb, feem ntau sawv cev los ntawm 0 thiab 1, thiab los ntawm cov ntaub ntawv ib txwm , uas tej zaum kuj muaj cov lej tab sis qhov twg tus nqi ntawm tus kheej poob rau ntawm qhov kev ntsuas arbitrary thiab tsuas yog tus txheeb ze qeb duas yog
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