Kev tsim kho siv tau yog dab tsi thiab vim li cas nws tseem ceeb?
Kev tsim kho siv tau yog dab tsi thiab vim li cas nws tseem ceeb?

Video: Kev tsim kho siv tau yog dab tsi thiab vim li cas nws tseem ceeb?

Video: Kev tsim kho siv tau yog dab tsi thiab vim li cas nws tseem ceeb?
Video: Lus Qhuab Qhia | “Vim Li Cas tus Vajtswv Uas Yug Los Ua Neeg ntawm Tiam Kawg Thiaj Li Yog Poj Niam?” 2024, Hlis ntuj nqeg
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Tsim validity yog ib qho kev ntsuam xyuas zoo npaum li cas koj tau txhais koj cov tswv yim lossis kev xav rau hauv cov kev pab cuam lossis kev ntsuas. Vim li cas qhov no tseem ceeb ? Vim tias thaum koj xav txog lub ntiaj teb los yog tham txog nws nrog lwm tus (qhov av ntawm txoj kev xav) koj siv cov lus uas sawv cev rau lub tswv yim.

Ib yam li ntawd, lub ntsiab lus ntawm kev tsim validity yog dab tsi?

Tsim validity yog "qhov degree uas qhov kev ntsuas ntsuas qhov nws thov, lossis qhov tseeb, los ntsuas." Nyob rau hauv lub classical qauv ntawm kev xeem siv tau , tsim validity yog ib qho ntawm peb hom tseem ceeb ntawm siv tau pov thawj, nrog rau cov ntsiab lus siv tau thiab cov txheej txheem siv tau.

Tsis tas li ntawd, ua li cas koj ua tiav kev tsim kho siv tau? Cov kws tshawb fawb feem ntau tsim cov tsim validity ntawm ib qho kev ntsuas los ntawm correlating nws nrog ib tug xov tooj ntawm lwm yam kev ntsuas thiab sib cav los ntawm tus qauv ntawm correlations uas qhov kev ntsuas yog txuam nrog cov variables nyob rau hauv lub theoretical kev kwv yees txoj kev.

Kuj tseem paub yog, dab tsi yog qhov tseem ceeb ntawm kev ntseeg siab thiab siv tau hauv kev tshawb fawb?

Kev ntseeg tau yog hais txog qhov sib xws ntawm kev ntsuas, thiab siv tau yog hais txog qhov tseeb ntawm kev ntsuas. Nws yog tseem ceeb xav txog kev ntseeg tau thiab validity thaum koj tsim koj kev tshawb fawb tsim, npaj koj txoj hauv kev, thiab sau koj cov txiaj ntsig, tshwj xeeb tshaj yog nyob rau hauv ntau kev tshawb fawb.

Dab tsi yog hom kev tsim validity?

Muaj ob hom kev tsim validity : convergent thiab discriminant siv tau . Tsim validity yog tsim los ntawm kev saib ntau yam kev tshawb fawb uas siv qhov kev ntsuam xyuas raug ntsuas.

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