Los ntawm kev noj ib theem ntawm qhov tseem ceeb ntawm 5?

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Los ntawm kev noj ib theem ntawm qhov tseem ceeb ntawm 5?
Los ntawm kev noj ib theem ntawm qhov tseem ceeb ntawm 5?

Video: Los ntawm kev noj ib theem ntawm qhov tseem ceeb ntawm 5?

Video: Los ntawm kev noj ib theem ntawm qhov tseem ceeb ntawm 5?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Lub peb hlis ntuj
Anonim

theem tseem ceeb yog qhov tshwm sim ntawm kev tsis lees paub qhov kev xav tsis tseeb thaum nws muaj tseeb. Piv txwv li, qhov tseem ceeb ntawm 0.05 qhia txog 5 % kev pheej hmoo ntawm kev txiav txim siab tias qhov sib txawv tshwm sim thaum tsis muaj qhov sib txawv tiag tiag.

Koj suav li cas qib 5% qhov tseem ceeb?

05, txhais tau tias qhov kev tshawb pom muaj tsib feem pua (. 05) muaj feem tsis muaj tseeb, uas yog kev sib tham ntawm 95% muaj feem yuav muaj tseeb. Txhawm rau nrhiav qhov tseem ceeb, rho tus lej qhia los ntawm ib qho.

Puas 5% theem ntawm qhov tseem ceeb txhais tau tias kev ntseeg siab?

Qib kev ntseeg siab yog sib npaug rau 1 - qib alpha. Yog li, yog tias koj qhov tseem ceeb theem yog 0.05, qhov sib txuas kev ntseeg siab yog 95%. Yog tias tus nqi P tsawg dua koj qhov tseem ceeb (alpha) qib, qhov kev ntsuam xyuas qhov kev xav yog qhov tseem ceeb.

Vim li cas kev ntseeg siab thiaj tseem ceeb?

Vim li cas kev ntseeg siab thiaj tseem ceeb? Vim hais tias kev ntseeg siab ib ntus sawv cev rau ntau yam ntawm cov qhab nia uas yuav zoo li yog tias peb yuav rov ua qhov kev ntsuam xyuas, lawv tseem ceeb txhawm rau txiav txim siab thaum nthuav dav cov txiaj ntsig.

Kev ntseeg siab hauv kev txheeb cais yog dab tsi?

Hauv kev txheeb cais, qib kev ntseeg siab qhia qhov tshwm sim, nrog rau qhov kev kwv yees ntawm qhov chaw ntawm tus lej ntsuas (piv txwv li tus lej lej) hauv cov qauv kev soj ntsuam kuj muaj tseeb rau cov pejxeem. Hauv kev tshawb fawb, kev ntseeg siab ntawm 90/95/99% feem ntau siv. …

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