Kev faib tawm yog skewed yog tias ib qho ntawm nws cov tails ntev dua li lwm tus. Thawj qhov kev faib tawm pom muaj qhov zoo skew. Qhov no txhais tau hais tias nws muaj tus Tsov tus tw ntev hauv qhov kev coj zoo.
Qhov twg yog qhov zoo?
Rau qhov kev faib tawm tsis zoo, qhov tsis zoo feem ntau qhia tias tus Tsov tus tw yog nyob rau sab laug ntawm kev faib tawm, thiab qhov zoo skew qhia tias tus Tsov tus tw yog ntawm sab xis. Thaum ib tus Tsov tus tw ntev tab sis tus Tsov tus tw yog rog, skewness tsis ua raws li txoj cai yooj yim.
Puas yog qhov zoo skew yog qhov zoo?
A txhais tau tias nrog qhov zoo skew yog qhov zoo, thaum lub ntsiab lus tsis zoo nrog qhov zoo tsis zoo. Yog tias cov ntaub ntawv teeb tsa muaj qhov zoo skew, tab sis qhov nruab nrab ntawm qhov rov qab yog qhov tsis zoo, nws txhais tau tias kev ua tau zoo tag nrho yog qhov tsis zoo, tab sis lub hlis dhau los yog qhov zoo.
Yuav ua li cas rau qhov zoo skewness?
Positive Skewness txhais tau tias thaum tus Tsov tus tw ntawm sab xis ntawm kev faib tawm ntev dua los yog rog dua. Qhov nruab nrab thiab nruab nrab yuav ntau dua li hom. Negative Skewness yog thaum tus Tsov tus tw ntawm sab laug ntawm kev faib tawm ntev dua los yog rog dua tus Tsov tus tw ntawm sab xis. Qhov nruab nrab thiab nruab nrab yuav tsawg dua li hom.
txhais li cas thaum cov qhab nia zoo skewed?
Ib qho kev faib tawm yog qhov zoo skewed yog cov qhab nia poob mus rau sab qis ntawm qhov ntsuas thiab muaj cov qhab nia siab dua tsawg heev. Positively skewed cov ntaub ntawv yogkuj hu ua skewed mus rau sab xis vim hais tias yog cov kev taw qhia ntawm 'ntev Tail kawg' ntawm daim ntawv.
