Video: Koj puas suav cov outliers hauv cov qauv sib txawv?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Txuj kev sib txawv yeej tsis phem. Standarddeviation yog rhiab rau outliers . Ib leeg outlier tuaj yeem tsa txheem sib txawv thiab nyob rau hauv lem, distort daim duab ntawm kis. Rau cov ntaub ntawv nrog kwv yees li qhov qub, qhov sib kis ntau dua, qhov ntau dua standarddeviation.
Hauv qhov no, qhov kev sib txawv ntawm tus qauv puas siv outliers?
Yog tias tus nqi yog tus lej ntawm standarddeviations deb ntawm qhov txhais tau tias, cov ntaub ntawv taw qhia tau txheeb xyuas asan outlier . Txoj kev no tuaj yeem ua tsis tiav outliers vim cov outliers nce qhov txheem sib txawv . Qhov siab tshaj qhov outlier , qhov ntau standarddeviation raug cuam tshuam.
Ib yam li ntawd, dab tsi suav tias yog ib qho outlier? Outlier . Piv txwv li, qhov taw tes ntawm sab laug nyob rau hauv daim duab saum toj no yog ib qho outlier . Ib qho yooj yim txhais ntawm ib outlier yog lub ntsiab lus uas ntog ntau dua 1.5 npaug ntawm qhov sib npaug ntawm qhov sib npaug ntawm qhov thib peb quartile lossis qis dua qhov thib ib. Outliers kuj tuaj yeem tshwm sim thaum sib piv kev sib raug zoo ntawm ob pawg ntawm cov ntaub ntawv.
Raws li txoj cai, muaj pes tsawg tus qauv sib txawv yog qhov outlier?
Tus nqi uas poob sab nraud ntawm 3 standarddeviations yog ib feem ntawm kev faib tawm, tab sis nws yog qhov tsis tshua muaj tshwm sim ntawm kwv yees li 1 ntawm 370 tus qauv. Peb standarddeviations los ntawm txhais tau tias yog ib qho kev txiav tawm hauv kev xyaum foridentifying outliers hauv Gaussian lossis Gaussian-likedistribution.
Txoj cai 1.5 IQR yog dab tsi?
Interquartile Txoj cai rau Outliers Txhua yam peb yuav tsum tau ua yog ua raws li hauv qab no: Multiplythe interquartile range ( IQR ) los ntawm tus lej 1.5 . Ntxiv 1.5 x ( IQR ) mus rau lub quarter thib peb. Txhua tus lej ntau dua qhov no yog qhov xav tias qhov kev xav tau. rho tawm 1.5 x( IQR ) los ntawm thawj quartile.
Pom zoo:
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