2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Nyob rau hauv qhov zoo skewed faib, lub txhais tau ntau dua qhov nruab nrabvim cov ntaub ntawv ntau dua rau sab qis thiab qhov nruab nrab ntawm tag nrho cov txiaj ntsig, qhov nruab nrab yog nruab nrab tus nqi ntawm cov ntaub ntawv. … 50, 51, 52, 59 qhia tau hais tias qhov kev faib tawm yog qhov zoo skewed raws li cov ntaub ntawv ib txwm muaj los yog qhov zoo sib cais ntau yam.
Thaum qhov kev faib tawm yog qhov zoo skewed txhais tau tias nruab nrab hom?
Yog qhov txhais tau ntau dua li hom, qhov kev faib tawm yog qhov zoo skewed. Yog tias qhov nruab nrab tsawg dua li hom, qhov kev faib tawm yog qhov tsis zoo skewed. Yog tias qhov nruab nrab ntau dua qhov nruab nrab, qhov kev faib tawm yog qhov zoo skewed. Yog tias qhov nruab nrab tsawg dua qhov nruab nrab, qhov kev faib tawm yog qhov tsis zoo.
Kev faib tawm zoo txhais li cas?
Kev faib tawm zoo yog kev faib nrog tus Tsov tus tw ntawm nws sab xis. Tus nqi ntawm skewness rau qhov zoo skewed faib yog ntau tshaj xoom. Raws li koj yuav tau nkag siab los ntawm kev saib daim duab, tus nqi ntawm qhov txhais tau tias yog qhov loj tshaj qhov ua raws li qhov nruab nrab thiab tom qab ntawd los ntawm hom.
Qhov twg ntawm qhov kev faib tawm hauv qab no yog qhov zoo skewed?
Right-skewed distributions tseem hu ua positive-skew distributions. Tias yog vim hais tias muaj tus Tsov tus tw ntev nyob rau hauv qhov kev coj zoo ntawm tus lej kab. Qhov nruab nrab kuj yog rau sab xis ntawm lub ncov. Qhov kev faib tawm ib txwm yog feem ntaukev faib tawm koj yuav hla.
Koj txhais li cas rau qhov kev faib tawm zoo?
Kev txhais. Yog hais tias skewness yog qhov zoo, cov ntaub ntawv yog zoo skewed los yog skewed txoj cai, txhais tau hais tias txoj cai tus Tsov tus tw ntawm lub faib yog ntev tshaj li ntawm sab laug. Yog tias skewness tsis zoo, cov ntaub ntawv tsis zoo skewed lossis skewed sab laug, txhais tau hais tias sab laug tus Tsov tus tw ntev dua.
Pom zoo:
Puas faib nyiaj faib ua cov nyiaj tau los?
Txhua cov nyiaj tau los them rau cov tswv lag luam yuav tsum suav nrog lawv cov nyiaj tau los tag nrho, tab sis cov nyiaj faib tsim nyog yuav tau txais kev kho se zoo dua. Ib qho nyiaj faib uas tsim nyog tau them se ntawm cov peev nyiaj tau los ntawm tus nqi se, thaum cov nyiaj faib tawm tau raug them se ntawm tsoomfwv cov nyiaj tau los tus qauv.
Yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau pom kev pom?
Txawm li cas los xij, corneal collagen cross-linking - cov txheej txheem qib siab tau pom zoo los ntawm US Food and Drug Administration (FDA) hauv xyoo 2016 - tuaj yeem txhim kho qhov pom kev hauv cov neeg mob txhua hnub nyoog. Corneal collagen cross-linking (CXL) tsis yog kho rau keratoconus, tab sis nws tuaj yeem pab tiv thaiv tus mob kom tsis txhob mob hnyav.
Nyob rau hauv qhov zoo skewed faib txhais tau tias nruab nrab hom?
Nyob rau hauv qhov zoo skewed faib, lub txhais tau ntau dua qhov nruab nrabvim cov ntaub ntawv ntau dua rau sab qis thiab qhov nruab nrab ntawm tag nrho cov txiaj ntsig, qhov nruab nrab yog nruab nrab tus nqi ntawm cov ntaub ntawv. Yog li, yog tias cov ntaub ntawv ntau dua khoov rau sab qis, qhov nruab nrab yuav ntau dua li tus nqi nruab nrab.
Puas faib khoom siv rau kev faib?
Lub faib khoom tsis siv rau kev faib tib yam txij li nws ua nrog kev sib tw, tab sis lub tswv yim ntawm kev faib lossis "sib cais" tuaj yeem siv los faib. Puas kev faib raug kaw raws li kev faib khoom? Raws li cov cuab yeej no, cov khoom ntawm cov lej lossis qhov sib txawv ntawm tus lej yog sib npaug rau cov lej lossis qhov sib txawv ntawm cov khoom.
Dab tsi faib yog tshuav skewed?
As laug-skewed faib muaj ib tug ntev sab laug. Sab laug-skewed distributions tseem hu ua negatively-skewed distributions. Tias yog vim hais tias muaj tus Tsov tus tw ntev nyob rau hauv qhov kev coj tsis zoo ntawm tus lej kab. Qhov nruab nrab kuj yog rau sab laug ntawm lub ncov.
