Video: Dab tsi yog cov ntaub ntawv ungrouped hauv kev txheeb cais?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ungrouped cov ntaub ntawv yog cov cov ntaub ntawv koj xub sau los ntawm kev sim lossis kev kawm. Cov cov ntaub ntawv yog raw - uas yog, nws tsis tau txheeb rau hauv pawg, cais, lossis lwm pawg. Ib tsis koom teeb ntawm cov ntaub ntawv yog ib daim ntawv teev cov lej.
Hauv qhov no, dab tsi yog qhov piv txwv ntawm ungrouped data?
Ungrouped cov ntaub ntawv yog hom kev faib nyob rau hauv uas lub cov ntaub ntawv yog tus kheej muab rau hauv daim ntawv nyoos. Rau piv txwv , cov qhab nia ntawm tus batsman hauv 5 qhov kev sib tw kawg yog muab 45, 34, 2, 77 thiab 80.
Tsis tas li ntawd, dab tsi yog grouped data piv txwv? Cov ntaub ntawv ua pab pawg yog cov ntaub ntawv uas tau muab khi ua ke hauv pawg. Histograms thiab cov lus zaus tuaj yeem siv los qhia hom no cov ntaub ntawv : Cov txheeb ze zaus histogram qhia cov phau ntawv muag rau ib hnub, txheeb los ntawm tus nqi. Ib lub rooj zaus qhia pawg cov ntaub ntawv los ntawm qhov siab.
Yog li ntawd, yuav ua li cas koj hloov cov ntaub ntawv ungrouped rau cov ntaub ntawv ua pawg?
Faib cov cov ntaub ntawv rau hauv tsib pawg, xws li, 0-5, 5-10, 10-15, 15-20 thiab 20-25, qhov twg 0-5 txhais tau tias cov qhab nia ntau dua lossis sib npaug rau 0 tab sis tsawg dua 5 thiab zoo sib xws 5-10 txhais tau tias cov qhab nia siab dua los yog sib npaug li 5 tab sis tsawg dua 10, thiab lwm yam. Npaj ib lub rooj zaus rau cov pawg cov ntaub ntawv.
Formula ntawm txhais tau tias sib txawv yog dab tsi?
Cov qauv yog: Mean Deviation = Σ|x − Μ|N. Σ yog Sigma, uas txhais tau hais tias suav nrog. || (cov kab ntsug) txhais tau tias Tus nqi tsis txaus, pib tsis quav ntsej cov cim kos. x yog txhua tus nqi (xws li 3 lossis 16)
Pom zoo:
Cov ntaub ntawv dab tsi ua rau cov ntawv sau npe hauv cov tshuaj formula muab?
Cov ntawv lossis cov ntawv uas sawv cev rau lub ntsiab lus hu ua nws lub cim atomic. Cov lej tshwm sim raws li cov ntawv sau npe hauv cov qauv tshuaj qhia txog tus lej ntawm atoms ntawm lub caij tam sim ua ntej subscript. Yog tias tsis muaj subscript tshwm sim, ib qho atom ntawm lub ntsiab yog tam sim no
Txoj kev faib cov ntaub ntawv twg muab cov ntaub ntawv sib npaug ntawm cov ntaub ntawv lossis cov kev tshuaj xyuas hauv txhua chav kawm cov ntaub ntawv?
Quantile. txhua chav kawm muaj cov yam ntxwv sib npaug. Ib qho kev faib tawm ntau yog zoo haum rau cov ntaub ntawv faib tawm. Quantile muab tib tus lej ntawm cov ntaub ntawv muaj nuj nqis rau txhua chav kawm
Cov yam ntxwv ntawm cov ntaub ntawv twg yog qhov ntsuas ntawm tus nqi uas cov ntaub ntawv muaj nuj nqis heev?
Variation: Ib qho kev ntsuas ntawm tus nqi uas cov ntaub ntawv muaj nuj nqis sib txawv. ? Kev faib tawm: Cov xwm txheej lossis cov duab ntawm kev sib kis ntawm cov ntaub ntawv hla ntau qhov tseem ceeb (xws li tswb-puab). ? Outliers: Cov qauv piv txwv uas nyob deb heev ntawm feem ntau ntawm lwm cov qauv nqi
Thaum muab piv cov qauv sau rau ib tus neeg raug liam cov ntaub ntawv lub hnub nyoog sib txawv ntawm cov ntaub ntawv yuav tsum tsis pub tshaj kaum ob lub hlis?
Thaum piv cov qauv sau rau tus neeg raug liam? cov ntaub ntawv, lub hnub nyoog sib txawv ntawm cov ntaub ntawv yuav tsum tsis pub ntau tshaj rau rau kaum ob lub hlis. Tus lej txaus ntawm tus qauv yog qhov tseem ceeb rau kev txiav txim siab qhov tshwm sim ntawm kev sib piv
Dab tsi yog cov cuab yeej lossis cov ntaub ntawv uas tus Kws Tshawb Fawb xav tau los txheeb xyuas cov ntaub ntawv nug?
Cov ntaub ntawv raug nug hauv chav kuaj ua txhaum cai yog nruab nrog lub tshuab ntsuas ntsuas, ntsuas cov duab digital, infrared thiab ultraviolet lub teeb ci, cov cuab yeej tshuaj ntsuam video thiab cov cuab yeej tshwj xeeb suav nrog cov khoom siv hluav taws xob tshawb pom electrostatic (EDD) thiab cov khoom siv los ua chemistry