Cov txheej txheem:
- Vim li cas siv lub ntsiab lus rau cov ntaub ntawv ploj yog lub tswv yim phem?
- Vim li cas tsis muaj qhov tseem ceeb yog qhov teeb meem?
- Vim li cas txhais hais tias tsis zoo?
- Koj puas yuav hloov cov ntaub ntawv ploj nrog qhov txhais tau?
Video: Dab tsi yog qhov tsis zoo ntawm imputing ploj qhov tseem ceeb nrog txhais tau tias?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Mean imputation distorts kev sib raug zoo ntawm cov variables Tab sis txhais tau tias imputation kuj distorts multivariate kev sib raug zoo thiab cuam tshuam cov txheeb cais xws li correlation. Piv txwv li, cov lus hauv qab no hu rau PROC CORR suav qhov sib txheeb ntawm qhov sib txawv ntawm Orig_Height thiab qhov hnyav thiab hnub nyoog sib txawv.
Vim li cas siv lub ntsiab lus rau cov ntaub ntawv ploj yog lub tswv yim phem?
Mean txo qis qhov sib txawv ntawm cov ntaub ntawv Kev nkag mus tob rau hauv kev ua lej, qhov sib txawv me me ua rau qhov kev ntseeg siab luv dua nyob rau hauv qhov tshwm sim faib[3]. Qhov no ua rau tsis muaj dab tsi ntxiv dua li qhia qhov tsis ncaj ncees rau peb tus qauv.
Vim li cas tsis muaj qhov tseem ceeb yog qhov teeb meem?
Cov ntaub ntawv ploj muaj ntau yam teeb meem. Ua ntej, qhov tsis muaj cov ntaub ntawv txo qis lub zog, uas yog hais txog qhov tshwm sim uas qhov kev sim yuav tsis lees paub qhov kev xav tsis tseeb thaum nws tsis tseeb. Qhov thib ob, cov ntaub ntawv ploj tuaj yeem ua rau muaj kev tsis ncaj ncees hauv kev kwv yees ntawm qhov tsis muaj. Thib peb, nws tuaj yeem txo tus neeg sawv cev ntawm cov qauv.
Vim li cas txhais hais tias tsis zoo?
Teeb meem 1: txhais tau tias imputation tsis khaws kev sib raug zoo ntawm cov sib txawv. Muaj tseeb, imputing tus txhais tau tias khaws cia lub ntsiab lus ntawm cov ntaub ntawv pom. Yog li yog tias cov ntaub ntawv ploj lawm tag nrho ntawm random, qhov kwv yees ntawm qhov nruab nrab tseem tsis muaj kev ncaj ncees.
Koj puas yuav hloov cov ntaub ntawv ploj nrog qhov txhais tau?
Cov ntsiab lus ntawm cov ntaub ntawv tawm yuav muaj feem cuam tshuam rau qhov txiaj ntsig thiab yog li, nyob rau hauv cov xwm txheej zoo li no, nws tsis raug pom zoo kom siv qhov txhais tau los hloov cov txiaj ntsig uas ploj lawm. Kev siv qhov tseem ceeb los hloov qhov tseem ceeb uas ploj lawm yuav tsis tsim ib qho qauv zoo thiab yog li raug txiav tawm.
Pom zoo:
Yuav tsum muaj qhov tseem ceeb hauv qhov zoo lossis qhov tsis zoo?
Qhov feem cuam tshuam ib txwm muaj yog 1.21 txog 1.52 AU / ml. Qhov kev ntsuam xyuas yuav qhia rau koj seb koj puas kuaj qhov zoo lossis tsis zoo rau Intrinsic factor blocking antibody lossis Intrinsic factor binding antibody. Tsawg dua 1.20 AU / mL raug suav tias yog qhov tsis zoo thiab ntau dua 1.
Dab tsi yog qhov tseem ceeb thiab tsis tseem ceeb?
Qhov me dua p-tus nqi, qhov muaj zog pov thawj uas koj yuav tsum tsis lees paub qhov kev xav tsis tseeb. Ib qho p-tus nqi tsawg dua 0.05 (feem ntau ≤ 0.05) yog qhov tseem ceeb. … A p-tus nqi siab dua 0.05 (> 0.05) tsis yogqhov tseem ceeb thiab qhia cov pov thawj muaj zog rau qhov kev xav tsis zoo .
Thaum twg qhov tseem ceeb thiab qhov tsis zoo tau ua ke hauv qhov?
Codominance yog thaum ob lub noob tsis qhia kev sib raug zoo ntawm kev sib raug zoo lossis tsis pom qhov nruab nrab, tab sis ob leeg qhia lawv tus kheej ib txhij. Qhov no tau tshaj tawm nyob rau hauv roan cim ntawm nyuj (piv txwv li thaj tsam ntawm 2 txawv xim ntawm daim tawv nqaij) .
Vim li cas qhov tseem ceeb yog qhov tseem ceeb?
Nws yuav tsum muaj lub zog lub cev thiab lub siab lub ntsws. Qhov tseem ceeb yog qhov tseem ceeb uas tso cai rau koj mus txuas ntxiv thiab ua lub neej zoo. Hauv qhov tseem ceeb, qhov tseem ceeb txhais tau hais tias muaj zog, noj qab nyob zoo, thiab muaj txiaj ntsig zoo.
Dab tsi yog qhov txawv ntawm qhov ua tsis tau thiab ua tsis tau?
Qhov sib txawv loj ntawm ob txoj lus qhuab qhia yog thaum tsis tuaj yeem zam kev ua haujlwm qhov twg lub luag haujlwm cog lus tsis tuaj yeem ua lub cev, cov lus qhuab qhia ntawm kev ua tsis tau zoo los rau hauv qhov kev ua tau zoo ntawm lub cev tseem ua tau, tab sis yuav yog lub nra hnyav heev rau tog uas nws qhov kev ua tau zoo… Kev ua tsis tau zoo ntawm kev ua tau txawv li cas ntawm kev ua tsis tau zoo?
