Video: Lub cheeb tsam ntawm kev tsis lees paub yog dab tsi?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Thaj tsam ntawm Kev tsis lees paub . Rau qhov kev ntsuam xyuas hypothesis, tus kws tshawb fawb sau cov ntaub ntawv piv txwv. Yog hais tias qhov statistic poob rau hauv ib qho kev teev tseg ntawm qhov tseem ceeb, tus kws tshawb fawb tsis lees paub qhov kev xav tsis tseeb. Qhov ntau yam ntawm qhov tseem ceeb uas ua rau tus kws tshawb fawb tsis lees paub qhov null hypothesis hu ua cheeb tsam ntawm kev tsis lees paub.
Tib neeg kuj nug, thaj chaw lees txais thiab tsis lees paub yog dab tsi?
Kev lees txais cheeb tsam / Kev tsis lees paub cheeb tsam . Qhov ntau muaj qhov tseem ceeb uas ua raws li qhov kev xav tsis tseeb yog qhov " cheeb tsam txais "; lwm yam, nyob rau hauv uas lub null hypothesis yog tsis lees paub , yog tsis kam lees cheeb tsam (los yog cheeb tsam tseem ceeb ).
Qhov thib ob, thaj tsam tseem ceeb yog dab tsi? Cov cheeb tsam tseem ceeb yog cov cheeb tsam ntawm qhov tseem ceeb uas sib haum mus rau qhov tsis lees paub ntawm qhov kev xav tsis zoo ntawm qee qhov kev xaiv qhov yuav tshwm sim. Qhov chaw ntxoov ntxoo nyob rau hauv tus tub ntxhais kawm qhov kev faib tawm nkhaus yog sib npaug rau qib ntawm qhov tseem ceeb.
Tsis tas li ntawd, thaj chaw tsis lees paub qhov tseem ceeb yog dab tsi?
Cov tsis kam lees cheeb tsam (tseem hu ua a cheeb tsam tseem ceeb ) yog ib feem ntawm cov txheej txheem xeem. Tshwj xeeb, nws yog thaj tsam ntawm qhov tshwm sim uas qhia koj yog tias koj txoj kev xav (koj ""hypothesis") yog qhov tseeb.
Lub cheeb tsam tsis lees paub yog dab tsi hauv kev ntsuam xyuas kev xav?
Kev tsis lees paub cheeb tsam : Tus naj npawb qhov tseem ceeb ntawm cov xeem statistic uas qhov null hy-pothesis yuav raug tsis lees paub. Cov tsis kam lees cheeb tsam yog xaiv kom qhov tshwm sim yog α uas nws yuav muaj cov xeem statistic thaum lub null kev xav muaj tseeb, yog li ua rau Type I yuam kev.
Pom zoo:
Dab tsi yog lub ntsiab lus ntawm kev cuam tshuam cheeb tsam tub rog?
Lub ntsiab txhais ntawm lub tebchaws United States Department of the term impact area. thaj tsam cuam tshuam. Ib cheeb tsam uas tau xaiv ciam teb nyob rau hauv cov kev txwv uas tag nrho cov riam phom yuav detonate los yog cuam tshuam. (US DoD)
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