Video: Puas yog qhov nruab nrab ib qho kev piav qhia lossis inferential statistic?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kev piav qhia txheeb cais siv cov ntaub ntawv los muab cov lus piav qhia ntawm cov pej xeem, los ntawm kev suav lej lossis cov duab lossis cov lus. Inferential txheeb cais ua inferences thiab kwv yees txog ib tug pej xeem raws li ib tug piv txwv ntawm cov ntaub ntawv coj los ntawm cov pejxeem nyob rau hauv nqe lus nug.
Xav txog qhov no, puas yog qhov nruab nrab ntawm kev piav qhia statistic lossis ib qho kev txheeb xyuas qhov tseeb?
Hauv piav txheeb cais , kev ntsuas xws li qhov nruab nrab thiab tus qauv sib txawv yog teev raws li cov lej. Txawm tias inferential txheeb cais siv qee qhov kev suav zoo sib xws - xws li qhov nruab nrab thiab tus qauv sib txawv - qhov ua kom pom tseeb sib txawv rau inferential txheeb cais.
Tsis tas li ntawd, Anova puas yog ib qho kev piav qhia lossis qhov tsis txaus ntseeg? Nrog rau kev ntsuam xyuas kev xav, ib tus siv ib qho kev sim xws li T-Test, Chi-Square, los yog ANOVA los ntsuam xyuas seb qhov kev xav txog qhov txhais tau li cas tiag los tsis yog. Kuv mam li tso rau ntawm qhov ntawd. Ntxiv dua thiab, lub ntsiab lus yog tias qhov no yog ib qho inferential txheeb cais txoj hauv kev kom ncav cuag cov lus xaus txog cov pej xeem, raws li cov qauv ntawm cov ntaub ntawv.
Ib yam li ntawd ib tug yuav nug, dab tsi yog ib qho piv txwv ntawm kev piav qhia txog kev txheeb cais?
Kev piav qhia txheeb cais yog siv los piav lossis sau cov ntaub ntawv hauv txoj hauv kev uas muaj txiaj ntsig thiab muaj txiaj ntsig. Rau piv txwv , nws yuav tsis muaj txiaj ntsig kom paub tias txhua tus neeg koom nrog hauv peb piv txwv hnav khau xiav. Central nyiam piav qhia txog qhov tseem ceeb hauv cov ntaub ntawv teev tseg. Variability piav qhia txog kev sib kis ntawm cov ntaub ntawv.
Ib co piv txwv ntawm inferential txheeb cais yog dab tsi?
Nrog inferential txheeb cais , koj coj cov ntaub ntawv los ntawm cov qauv thiab ua generalizations txog cov pejxeem. Rau piv txwv , tej zaum koj yuav sawv hauv lub khw thiab nug ib qauv ntawm 100 tus neeg yog tias lawv nyiam yuav khoom ntawm Sears.
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