Can kurtosis tsis zoo?

Cov txheej txheem:

Can kurtosis tsis zoo?
Can kurtosis tsis zoo?

Video: Can kurtosis tsis zoo?

Video: Can kurtosis tsis zoo?
Video: lecture-18 || skewness and kurtosis || 2024, Hlis ntuj nqeg
Anonim

Qhov txiaj ntsig ntawm ntau tshaj kurtosis tuaj yeem yog qhov tsis zoo lossis qhov zoo. Thaum tus nqi ntawm qhov ntau tshaj kurtosis yog qhov tsis zoo, qhov kev faib tawm yog hu ua platykurtic. Hom kev faib tawm no muaj tus Tsov tus tw uas nyias nyias dua li ib txwm faib.

Puas yog kurtosis ib txwm zoo?

Kuj, kurtosis ib txwm zoo, yog li kev siv rau cov paib qhia tias lawv tau hais tias kev faib khoom muaj ntau dua kurtosis dua li qub. Skew qhia tias qhov kev faib tawm asymmetrical li cas, nrog ntau qhov skew qhia tias ib qho ntawm cov tails "stretches" tawm ntawm hom kev deb dua li lwm qhov.

txhais li cas yog kurtosis tsis zoo?

Qhov txiaj ntsig tsis zoo ntawm kurtosis qhia tias kev faib tawm yog tiaj thiab muaj cov tails nyias Platykurtic distributions muaj qhov tsis zoo kurtosis qhov tseem ceeb. Kev faib tawm platykurtic yog flatter (tsawg peaked) thaum piv nrog rau qhov kev faib tawm ib txwm muaj, nrog tsawg dua qhov tseem ceeb hauv nws luv (piv txwv li sib dua thiab nyias) tails.

Dab tsi yog qhov tsis zoo skewness thiab kurtosis txhais tau li cas?

Ntawd yog, cov ntaub ntawv teev nrog cov kurtosis siab yuav muaj cov tails hnyav, lossis outliers. Cov ntaub ntawv teev nrog qis kurtosis yuav muaj lub teeb tails, los yog tsis muaj outliers. … Cov txiaj ntsig tsis zoo rau qhov skewness qhia cov ntaub ntawv uas skewed sab laug thiab qhov txiaj ntsig zoo rau qhov skewness qhia cov ntaub ntawv uas skewed txoj cai.

Puas skewness yuav tsis zoo?

Tus tus nqi tsis txaus ntseeg tuaj yeem yog qhov zoo, xoom, tsis zoo, lossis tsis tau txhais. Rau qhov kev faib tawm tsis zoo, qhov tsis zoo skew feem ntau qhia tias tus Tsov tus tw yog nyob rau sab laug ntawm qhov kev faib tawm, thiab qhov zoo skew qhia tias tus Tsov tus tw yog nyob rau sab xis.

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