Video: Dab tsi yog qhov peaks ntawm ib daim duab dot?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Peaks thiab kis tau
Txheeb xyuas qhov ncov , uas yog cov bins uas muaj ntau tshaj dots . Cov ncov sawv cev rau qhov tseem ceeb tshaj plaws hauv cov qauv. Txheeb xyuas qhov sib kis ntawm koj tus qauv kom nkag siab tias koj cov ntaub ntawv sib txawv npaum li cas. Piv txwv li, hauv qhov no dotplot ntawm cov neeg siv khoom tos sijhawm, lub ncov ntawm cov ntaub ntawv tshwm sim ntawm li 6 feeb.
Ib yam li ntawd, cov duab txhais li cas ntawm ib daim duab kos?
Lesson Summary Lub chaw yog qhov nruab nrab thiab/los yog txhais tau tias ntawm cov ntaub ntawv. Kev sib kis yog qhov ntau ntawm cov ntaub ntawv. Thiab, cov puab piav txog hom daim duab . Plaub txoj kev piav qhia puab yog seb nws yog symmetrical, pes tsawg peaks nws muaj, yog tias nws yog skewed rau sab laug lossis sab xis, thiab seb nws yog uniform.
Ib yam li ntawd, dab tsi yog ib qho teeb pom kev zoo? Cov dot zaj siv tus lej kab los qhia cov naj npawb ntawm cov sij hawm txhua tus nqi hauv cov ntaub ntawv tshwm sim. Dot zaj duab xis (los yog kab cov phiaj xwm ) qhia pawg, ncov, thiab qhov khoob hauv cov ntaub ntawv. Koj tuaj yeem siv a dot zaj txhawm rau txheeb xyuas cov duab ntawm kev faib khoom. Hnav khaub ncaws.
Ib yam li ib tug yuav nug, dab tsi yog qhov ncov ntawm daim duab?
Piav: A ncov nyob rau hauv cov ntaub ntawv qhia tau hais tias koj muaj ib tug loj tus naj npawb ntawm cov neeg teb los yog tus nqi siab ntawm ib tug tej yam taw tes raws li koj x axis. Hauv daim duab hauv qab no, thawj series ntawm cov ntaub ntawv (xiav) muaj ib tug ntse ncov ntawm 8 ntawm x axis qhov thib ob series ntawm cov ntaub ntawv (txiv kab ntxwv) muaj ib tug gradual ntau ncov ua 6x ax.
Dab tsi yog qhov skewed dot plot?
Qhov feem ntau raug symmetric histogram los yog dot zaj muaj kab ntsug siab tshaj plaws nyob rau hauv nruab nrab. Skewed Yog (positively ua skew ) - cov ntaub ntawv tsawg dua cov phiaj xwm pom nyob rau sab xis ntawm lub daim duab (mus rau cov lej loj dua). Qhov "tail" ntawm lub daim duab yog rub mus rau cov lej zoo dua, lossis mus rau sab xis.
Pom zoo:
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