Dab tsi yog qhov laj thawj tom qab Spearman Brown prophecy formula?

2024 Tus sau: Edward Hancock | [email protected]. Kawg hloov kho: 2023-12-16 01:32

Cov Spearman – Xim av kev kwv yees qauv , kuj hu ua Spearman – Brown prophecy formula , yog a qauv hais txog psychometric kev ntseeg tau los ntsuas qhov ntev thiab siv los ntawm psychometricians los kwv yees qhov kev ntseeg siab ntawm qhov kev sim tom qab hloov qhov ntsuas ntev.

Ib yam li ntawd, koj siv Spearman Brown prophecy mis li cas?

Spearman-Brown Formula

1. r_{kk ua} = kev ntseeg ntawm qhov kev xeem "k" lub sij hawm ntev npaum li qhov kev xeem thawj,
2. r₁₁ = kev ntseeg siab ntawm qhov kev sim thawj (piv txwv li Cronbach's Alpha),
3. k = yam uas qhov ntev ntawm qhov kev xeem hloov. Txhawm rau nrhiav k, faib cov khoom ntawm qhov kev sim thawj zaug los ntawm tus lej ntawm cov khoom ntawm qhov kev xeem tshiab.

Tom qab ntawd, lo lus nug yog, koj ua li cas suav faib ib nrab kev ntseeg tau? Cov kauj ruam

1. Muab qhov kev xeem rau cov tub ntxhais kawm ntawv loj (qhov zoo tshaj, tshaj li 30).
2. Random faib cov lus nug xeem ua ob ntu. Piv txwv li, cais cov lus nug los ntawm cov lus nug khib.
3. Tau qhab nia ib nrab ntawm qhov kev xeem rau txhua tus tub ntxhais kawm.
4. Nrhiav qhov sib txheeb coefficient rau ob halves.

Ib yam li ntawd ib tug yuav nug, K yog dab tsi thaum xam Cronbach's alpha?

k hais txog tus naj npawb ntawm cov khoom ntsuas. ˉc hais txog qhov nruab nrab ntawm txhua qhov sib txawv ntawm cov khoom. ˉv hais txog qhov sib txawv nruab nrab ntawm txhua yam khoom. Cronbach's alpha yog li no muaj nuj nqi ntawm tus naj npawb ntawm cov khoom hauv ib qho kev xeem, qhov nruab nrab qhov sib txawv ntawm cov khoom sib txawv, thiab qhov sib txawv ntawm tag nrho cov qhab nia.

Parallel forms reliability yog dab tsi?

Parallel forms kev ntseeg siab tuaj yeem pab koj sim tsim. Parallel forms kev ntseeg siab (tseem hu ua sib npaug tsim kev ntseeg tau ) siv ib pawg ntawm cov lus nug muab faib ua ob pawg sib npaug ( daim ntawv ”), qhov twg ob lub teeb muaj cov lus nug uas ntsuas tib qhov tsim, kev paub lossis kev txawj.