Ib qho piv txwv ntawm qhov tseem ceeb ntawm kev txheeb cais yog dab tsi?

2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17

Statistical tseem ceeb yog feem ntau xyaum siv nyob rau hauv txheeb cais kev ntsuam xyuas hypothesis. Rau piv txwv , koj xav paub seb puas los yog tsis hloov xim ntawm lub pob ntawm koj lub vev xaib los ntawm liab mus rau ntsuab yuav ua rau ntau tus neeg nyem rau ntawm nws. P-value yog hais txog qhov muaj txiaj ntsig ntawm kev soj ntsuam qhov cuam tshuam los ntawm a qauv.

Kuj nug, nws txhais li cas kom muaj qhov tseem ceeb ntawm kev txheeb cais?

Kev txheeb cais tseem ceeb txhais tau tias ib qho tshwm sim yog tsis zoo vim muaj caij nyoog. P-value yog qhov tshwm sim ntawm qhov tau txais qhov sib txawv peb pom los ntawm tus qauv (lossis ib qho loj dua) yog tias tsis muaj qhov sib txawv rau txhua tus neeg siv. Statistical tseem ceeb tsis txhais tau tias siv tau qhov tseem ceeb.

Nws txhais li cas kom tsis muaj qhov tseem ceeb? Qhov "layman's" lub ntsiab lus ntawm tsis yog qhov tseem ceeb yog tias lub zog ntawm kev sib raug zoo lossis qhov loj ntawm qhov sib txawv tau pom hauv koj qhov qauv, yuav yuav ntau dua TSIS TAU YUAV TSUM TAU TXAIS NTAWM POPULATION koj cov qauv purports los sawv cev.

Ua raws li qhov no, koj yuav txiav txim siab li cas yog tias qhov sib txawv yog qhov tseem ceeb?

Yog koj p-tus nqi tsawg dua los yog sib npaug ntawm qhov teeb qhov tseem ceeb qib, cov ntaub ntawv yog xam tseem ceeb heev . Raws li txoj cai dav dav, lub qhov tseem ceeb qib (los yog alpha) feem ntau yog teem rau 0.05, txhais tau hais tias qhov tshwm sim ntawm kev soj ntsuam qhov sib txawv pom hauv koj cov ntaub ntawv los ntawm lub caij nyoog tsuas yog 5%.

Dab tsi yog qhov tseem ceeb ntawm cov qauv piv txwv?

Feem ntau, txoj cai ntawm tus ntiv tes xoo yog qhov loj dua qauv loj , ntau tseem ceeb heev nws yog-lub ntsiab lus muaj tsawg lub caij nyoog uas koj tau tshwm sim los ntawm coincidence.