Nyob rau hauv qhov zoo skewed faib, lub txhais tau ntau dua qhov nruab nrabvim cov ntaub ntawv ntau dua rau sab qis thiab qhov nruab nrab ntawm tag nrho cov txiaj ntsig, qhov nruab nrab yog nruab nrab tus nqi ntawm cov ntaub ntawv. Yog li, yog tias cov ntaub ntawv ntau dua khoov rau sab qis, qhov nruab nrab yuav ntau dua li tus nqi nruab nrab.
Kev sib raug zoo ntawm qhov nruab nrab nruab nrab thiab hom kev faib tawm zoo yog dab tsi?
Nyob rau hauv qhov zoo skewed faib, tus nruab nrab thiab hom yuav nyob rau sab laug ntawm qhov txhais tau. Qhov ntawd txhais tau hais tias qhov nruab nrab yog siab dua qhov nruab nrab thiab qhov nruab nrab yog ntau dua li hom (Mean > Median > Hom) (Fig. 14.4). … Whereas qhov tsis zoo skewed faib qhov nruab nrab thiab hom yuav mus rau sab xis ntawm qhov nruab nrab.
Yuav ua li cas thaum qhov kev faib tawm yog qhov zoo?
Kev faib tawm zoo hauv nyiaj txiag
ua raws li kev faib tawm ib txwm, qhov tseeb, cov khoom xa rov qab feem ntau yog skewed. Qhov zoo skewness ntawm ib qho kev faib tawm qhia tias tus neeg ua lag luam yuav xav tias yuav poob qis me ntsis thiab ob peb qhov loj los ntawm kev nqis peev.
Kev faib tawm twg yog qhov zoo skewed?
Right-skewed distributions tseem hu ua positive-skew distributions. Qhov ntawd yog vim tias muaj tus Tsov tus tw ntev nyob rau hauv qhov kev coj zoo ntawm tus lej kab. Qhov nruab nrab kuj yog rau sab xis ntawm lub ncov. Qhov ib txwm faib yogkev faib ntau tshaj plaws uas koj yuav hla.
Koj txhais li cas qhov kev faib tawm tsis zoo?
Kev faib tawm tsis zoo yog hais txog hom kev faib khoom uas ntau qhov tseem ceeb tau npajntawm sab xis ntawm daim duab, qhov twg tus Tsov tus tw ntawm qhov kev faib tawm ntev dua rau sab laug thiab qhov nruab nrab yog qis dua qhov nruab nrab thiab hom uas nws yuav yog xoom lossis tsis zoo vim qhov xwm txheej ntawm cov ntaub ntawv tsis zoo …
