Ib daim duab qhia yog daim ntawv qhia uas cov ntaub ntawv siv cov kab plaub fab lossis kab(hu ua bins) uas sawv cev rau tag nrho cov kev soj ntsuam hauv cov ntaub ntawv rau qeb ntawd. … Ib tug histogram yog ib qho piv txwv ntawm ib daim duab qhia siv nyob rau hauv statistical tsom xam uas depicts ib tug probability faib nyob rau hauv ib co ntaub ntawv los yog cov qauv.
Koj sawv cev li cas cov ntaub ntawv hauv daim duab qhia?
Cov ntaub ntawv hauv daim duab qhia yog sawv cev nrog rau kab rov tav thiab ntsug. kab rov tav axis feem ntau sawv cev rau lub sij hawm los yog ncua sij hawm thiab ntsug axis sawv cev rau qhov ntau. Txhua axis muaj ib daim ntawv lo. Daim ntawv lo qhia txog cov ntaub ntawv sawv cev ntawm txhua axis.
Dab tsi yog ib chav nyob hauv daim duab qhia?
Scale txhais tau tias tus lej siv los sawv cev ib chav nyob ntev ntawm ib lub bar. Piv txwv li, qhov ntsuas rau daim duab qhia ntawm no yog 1 chav tsev ntev=100 tus menyuam.
Dab tsi cov ntaub ntawv nkag mus rau hauv daim duab qhia?
Ib daim duab kos ua rau nws yooj yim los piv sets ntawm cov ntaub ntawv ntawm cov pab pawg sib txawv ntawm ib nrais muag. Daim duab sawv cev rau pawg ntawm ib qho axis thiab tus nqi tsis sib xws hauv lwm qhov. Lub hom phiaj yog los qhia txog kev sib raug zoo ntawm ob lub axes. Cov kab kos kab kuj tseem tuaj yeem pom cov kev hloov pauv loj hauv cov ntaub ntawv dhau sijhawm.
Puas zoo ib yam li daim duab bar?
Cov kab kos duab muaj qhov zoo ib yam li histograms. Txawm li cas los xij, cov kab kos bar yog siv rau cov ntaub ntawv categorical lossis zoo thaum histograms siv rau cov ntaub ntawv ntau. Tsis tas li ntawd, hauv histograms, chav kawm (los yogtuav) yog qhov dav sib npaug thiab kov ib leeg, thaum nyob rau hauv daim ntawv qhia bar cov tuav tsis txhob kov ib leeg.
