Kr21 yog dab tsi?
Kr21 yog dab tsi?

Video: Kr21 yog dab tsi?

Video: Kr21 yog dab tsi?
Video: Hmong new song 2016 - Yog dab tsi - Xub Hluav Taws (Official MV) 2024, Kaum ib hlis
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KR-20 / KR-20 yog kev ntsuas kev ntseeg siab, Kuder-Richardson Formula 20, lossis KR-20, yog kev ntsuas kev ntseeg siab rau kev sim nrog binary variables (piv txwv li cov lus teb uas yog lossis tsis yog). KR20 yog siv rau cov khoom uas muaj kev sib txawv nyuaj.

Khaws qhov no hauv kev xav, kr20 txhais li cas?

Lub Kuder thiab Richardson Formula 20 ( KR 20 ) yog siv los kwv yees qhov kev cia siab ntawm kev ntsuas binary, saib seb cov khoom hauv qhov kev xeem tau txais tib yam binary (txoj cai / tsis ncaj ncees lawm) tshaj li cov pej xeem ntawm cov kev xeem.

Kuj Paub, Kuder Richardson txoj kev yog dab tsi? Hauv psychometrics, lub Kuder – Richardson Formula 20 (KR-20), thawj zaug luam tawm nyob rau hauv 1937, yog ib qho kev ntsuas ntawm qhov sib xws ntawm kev ntseeg siab rau kev ntsuas nrog cov kev xaiv dichotomous. Nws yog tsim los ntawm Kuder thiab Richardson . Nws feem ntau tau lees tias qhov siab ntawm KR-20 coefficient (piv txwv li,> 0.90) qhia tau tias muaj kev sib tw homogeneous.

Kuj paub, koj yuav daws li cas kr21?

Cov mis rau KR 21 rau qhov qhab nia X yog K / (K-1) * (1 - U * (KU) / (K * V)), qhov K yog tus lej ntawm cov khoom, U yog qhov txhais tau tias X thiab V yog qhov txawv ntawm X.

Koj nyeem Kuder Richardson li cas?

Kuder Richardson 20 Qhov kev txheeb xyuas no ntsuas ntsuas kev ntseeg tau ntawm cov khoom sib xws. Tus nqi siab dua qhia tias muaj kev sib raug zoo ntawm cov khoom ntawm qhov kev xeem. Tus nqi qis dua qhia tias muaj kev sib raug zoo ntawm cov khoom kuaj. Cov nqi sib txawv ntawm 0 txog 1.

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