Excel Function: Excel muab cov haujlwm SKEW ua ib txoj hauv kev los xam qhov skewness ntawm S, piv txwv li yog R yog ntau yam hauv Excel uas muaj cov ntaub ntawv hauv S ces SKEW(R)=qhov skewness ntawm S. Cov qauv no tau raug siv hauv Excel 2013 siv cov haujlwm, SKEW.
Lub luag haujlwm twg hauv Excel yuav ua rau cov ntaub ntawv tsis txaus ntseeg?
The Excel SKEW muaj nuj nqi rov qab qhov skewness ntawm kev faib khoom, uas yog qhov ntsuas ntawm symmetry. Qhov txiaj ntsig zoo qhia tau hais tias kev faib tawm uas tawm mus rau sab xis. Qhov tshwm sim tsis zoo qhia tau tias muaj kev faib tawm uas tawm mus rau sab laug.
Yuav ua li cas xam skewness?
Tus qauv muab hauv phau ntawv kawm feem ntau yog Skew=3(Mean – Median) / Standard Deviation.
Koj ua li cas xam skewness thiab kurtosis ntawm pawg cov ntaub ntawv hauv Excel?
1. Formula & Piv txwv
- Population Standard deviation σ=√∑(x-ˉx)2n.
- Skewness=∑(x-ˉx)3n⋅S3.
- Kurtosis=∑(x-ˉx)4n⋅S4.
Vim li cas peb ntsuas skewness?
Nyob rau hauv qhov nkhaus ntawm kev faib tawm, cov ntaub ntawv nyob rau sab xis ntawm qhov nkhaus yuav taper txawv ntawm cov ntaub ntawv ntawm sab laug. … Skewness yog siv nrog rau kurtosis txhawm rau txiav txim siab zoo dua qhov tshwm sim ntawm cov xwm txheej poob rau hauv cov tails ntawm qhov yuav tshwm sim.
