Dab tsi z qhab nia yog suav hais tias yog outlier?
Dab tsi z qhab nia yog suav hais tias yog outlier?

Video: Dab tsi z qhab nia yog suav hais tias yog outlier?

Video: Dab tsi z qhab nia yog suav hais tias yog outlier?
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Ib qho z - qhab nias ntau dua 3 lossis tsawg dua -3is xav txog ua ib outlier . Txoj cai ntawm tus ntiv tes xoo no yog nyob ntawm txoj cai empirical. Los ntawm txoj cai no peb pom tias yuav luag tag nrho cov ntaub ntawv (99.7%) yuav tsum nyob rau hauv peb tus qauv sib txawv ntawm qhov txhais tau tias.

Ua raws li qhov no hauv kev txiav txim siab, koj yuav txiav txim siab li cas rau qhov outlier?

Ib qho taw tes uas ntog sab nraum cov ntaub ntawv teeb tsa lub laj kab sab hauv cais raws li tus me outlier , hos ib tug uas ntog sab nraum lub laj kab sab nrauv yog cais raws li ib tug loj outlier . Kom pom cov laj kab sab hauv rau koj cov ntaub ntawv teeb tsa, ua ntej, muab qhov sib npaug ntawm qhov sib npaug los ntawm 1.5. Tom qab ntawd, ntxiv qhov tshwm sim rau Q3 thiab rho tawm los ntawm Q1.

Ib yam li ntawd, Tukey txoj cai yog dab tsi rau outliers? Tukey txoj cai hais tias lub outliers arevalues ntau tshaj 1.5 npaug ntawm interquartile ntau los ntawm thequartiles - xws li hauv qab Q1 - 1.5IQR, los yog siab dua Q3 +1.5IQR.

Dhau li ntawm qhov no, dab tsi yog suav tias yog qhov outlier hauv kev faib khoom ib txwm?

Txhua yam 2.72 tus qauv sib txawv saum Q3 lossis 2.72 hauv qab Q1 yog cais raws li ib tug outlier . Koj tuaj yeem hais tag nrho cov nqi uas yog 3.4 tus qauv sib txawv saum toj no lossis qis dua qhov nruab nrab / nruab nrab yog outliers . Yog tias nws ua, ces tus nqi yuav tsis yog ib qho outlier thiab koj yuav muaj ib tug bimodal kev faib tawm ntawm qhov muaj nqis.

Dab tsi txhais tau tias qhov 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 ib qho taw tes uas ntog ntau tshaj 1.5 npaug ntawm qhov sib npaug ntawm qhov sib npaug ntawm qhov thib peb quartile lossis qis dua thawj quartile. Outliers kuj tuaj yeem tshwm sim thaum sib piv kev sib raug zoo ntawm ob pawg ntawm cov ntaub ntawv.

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