Ib qho kev faib tawm yog skewed yog tias ib qho ntawm nws cov tails ntev dua li lwm tusThawj qhov kev faib tawm muaj qhov zoo skew. Qhov no txhais tau hais tias nws muaj tus Tsov tus tw ntev nyob rau hauv txoj kev zoo. Kev faib tawm hauv qab no muaj qhov tsis zoo skew vim nws muaj tus Tsov tus tw ntev hauv qhov tsis zoo.
Yuav ua li cas skew ntawm kev faib tawm?
Ib qho kev faib tawm yog hais tias yuav skewed thaum cov ntaub ntawv cov ntsiab lus pawg ntau dua mus rau ib sab ntawm qhov ntsuas dua li lwm qhov, tsim qhov nkhaus uas tsis sib luag. Hauv lwm lo lus, sab xis thiab sab laug ntawm kev faib khoom yog qhov sib txawv ntawm ib leeg.
Koj txhais li cas rau kev faib tawm skewed?
Kev txhais. Yog hais tias skewness yog qhov zoo, cov ntaub ntawv yog zoo skewed los yog skewed txoj cai, txhais tau hais tias txoj cai tus Tsov tus tw ntawm lub faib yog ntev tshaj li ntawm sab laug. Yog tias skewness tsis zoo, cov ntaub ntawv tsis zoo skewed lossis skewed sab laug, txhais tau hais tias sab laug tus Tsov tus tw ntev dua.
Yuav ua li cas thiaj nrhiav tau qhov skew ntawm kev faib tawm?
Xaiv. Cov qauv muab rau hauv phau ntawv qhia feem ntau yog Skew=3(Mean – Median) / Standard Deviation. Qhov no yog hu ua lwm txoj kev Pearson Mode Skewness. Koj tuaj yeem xam skew ntawm tes.
Kev faib tawm skewed hu ua dab tsi?
As laug-skewed faib muaj ib tug ntev sab laug. Sab laug-skewed distributions tseem hu ua negatively-skewed distributions. Tias yog vim hais tias muaj tus Tsov tus tw ntev nyob rau hauv qhov kev coj tsis zoo ntawm tus lej kab. Qhov nruab nrab kuj yog rau sab laug ntawm lub ncov. … Txoj cai-skewed distributions kuj hu ua zoo- skew distributions
