Video: Dab tsi yog qhov txawv ntawm histogram thiab Boxplot?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Cov ntaub ntawv ntxiv: Histograms qee zaum hu ua Frequency Plots thaum boxplots yog hu ua Box-and-Whisker Plots. A histogram feem ntau yog siv rau cov ntaub ntawv txuas mus ntxiv thaum daim ntawv qhia bar yog cov ntaub ntawv suav.
Cov lus nug tseem yog, vim li cas lub thawv ntawv zoo dua li histogram?
Cov kab ntawv kawg qhia tau hais tias a lub thawv ntawv tuaj yeem siv tau ntau dua tshaj ib histogram . Qhov no tshwm sim thaum muaj kev sib txawv nruab nrab ntawm cov kev soj ntsuam frequencies, uas ua rau cov histogram kom saib ragged thiab tsis-symmetrical vim txoj kev cov ntaub ntawv yog grouped. Qhov no yuav ua rau ib tug xav tias cov ntaub ntawv yog me ntsis skewed.
Tsis tas li ntawd, yog Box plot ib histogram? A lub thawv thiab whisker zaj yog txhais raws li ib txoj kev graphical ntawm displaying variation nyob rau hauv ib pawg ntawm cov ntaub ntawv. Feem ntau, a histogram tsom xam muab ib tug txaus zaub, tab sis a lub thawv thiab whisker zaj tuaj yeem muab cov ncauj lus kom ntxaws ntxiv thaum tso cai rau ntau cov ntaub ntawv tso tawm kom pom hauv tib yam daim duab.
Boxplot qhia tias histogram tsis yog dab tsi?
Nyob rau hauv cov ntaub ntawv univariate, box-ploj ua muab qee cov ntaub ntawv uas cov histogram tsis (tsawg kawg, tsis yog qhia meej). Ntawd yog, nws feem ntau muab qhov nruab nrab, 25th thiab 75th feem pua, min / max uas yog tsis yog ib qho outlier thiab qhia meej cais cov ntsiab lus uas suav tias yog outliers.
Vim li cas thiaj siv lub thawv ntawv?
A lub thawv thiab whisker zaj yog ib txoj hauv kev los xaus ib pawg ntawm cov ntaub ntawv ntsuas ntawm lub sijhawm ntsuas. Nws feem ntau siv rau hauv kev piav qhia cov ntaub ntawv txheeb xyuas. Hom duab no yog siv los qhia cov duab ntawm kev faib khoom, nws cov nqi nruab nrab, thiab nws qhov sib txawv.
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