Bar Graph vs Kem Graph
Daim duab yog graphical txhais tau tias nthuav qhia cov ntsiab lus ntawm cov ntaub ntawv. Cov khoom muaj nyob rau hauv cov ntaub ntawv loj tuaj yeem pom tau yooj yim thiab kuaj pom los ntawm kev siv daim duab. Raws li hom ntaub ntawv thiab txoj kev nthuav qhia, ntau hom duab tau tsim. Ntau tus tau los ua neeg nyiam nyob rau thaum ntxov 19th thiab 20th centuries, thaum uas tig mus rau kev nce qib ntawm kev vam meej.
Bar graph yog ib qho ntawm cov duab sawv cev tseem ceeb hauv kev txheeb cais. Nws yog siv los tso saib cov txiaj ntsig sib txawv ntawm cov ntaub ntawv zoo ntawm kab rov tav axis thiab cov txheeb ze frequencies (los yog frequencies lossis feem pua) ntawm cov nqi ntawm ib txoj kab ntsug. Ib lub bar nrog nws qhov siab / ntev proportional rau tus txheeb ze zaus sawv cev rau txhua tus nqi sib txawv, thiab cov tuav tau muab tso rau hauv ib txoj kev uas lawv tsis kov ib leeg, tshwj tsis yog lawv koom rau tib pawg. Ib daim duab bar nrog cov kev teeb tsa saum toj no yog qhov ntau tshaj plaws thiab paub tias yog kab ntawv ntsug lossis kab duab kab. Tab sis nws kuj tseem tuaj yeem hloov cov axes; Nyob rau hauv tas li ntawd, cov tuav yog kab rov tav.
Daim duab qhia tau siv thawj zaug hauv 1786 phau ntawv "Kev Lag Luam thiab Kev Lag Luam Atlas" los ntawm William Playfair. Txij thaum ntawd los bar graph tau dhau los ua ib qho ntawm cov cuab yeej tseem ceeb tshaj plaws hauv kev sawv cev cov ntaub ntawv categorical. Kev siv cov kab kos duab tuaj yeem txuas ntxiv los sawv cev cov ntaub ntawv nyuaj, xws li lub sijhawm tsim cov kev hloov pauv (cov lus teb xaiv tsa), cov ntaub ntawv ua pab pawg thiab ntau dua.
Ib kab ntawv / kab ntawv yog qhov pib kab teeb tsa nrog cov kab ntsug.
A histogram yog qhov tshwj xeeb muab los ntawm kab ke kab.
Dab tsi yog qhov txawv ntawm Bar graph thiab Kem Graph?
• Ib daim duab qhia yog cov duab sawv cev ntawm cov ntaub ntawv hauv ob lub axes siv cov duab plaub los qhia qhov loj ntawm qhov sib txawv. Qhov ntev ntawm daim duab plaub qhia qhov tseem ceeb ntawm qhov sib txawv ntawm qhov kev txiav txim siab.
• Kev taw qhia ntawm cov kab tuav tuaj yeem yog kab rov tav lossis ntsug, tab sis nyob rau hauv rooj plaub ntawm cov kab ntsug cov duab kuj hu ua kab kab.
