Bar Graph vs Histogram
Nyob rau hauv kev txheeb cais, cov ntsiab lus thiab nthuav qhia cov ntaub ntawv tseem ceeb. Nws tuaj yeem ua tau los ntawm tus lej siv cov kev ntsuas piav qhia lossis siv cov duab kos duab kos duab, bar graphs, thiab ntau lwm txoj hauv kev sawv cev.
Dab tsi yog Bar Graph?
Bar graph yog ib qho ntawm cov duab sawv cev tseem ceeb hauv kev txheeb cais. Nws yog siv los tso saib qhov tseem ceeb 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 nyob rau hauv ib txoj kev uas lawv tsis kov ib leeg. 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 rau cov ntaub ntawv nyuaj, xws li lub sijhawm tsim cov kev hloov pauv (kev xaiv teb), cov ntaub ntawv sib koom, thiab ntau dua.
Histogram yog dab tsi?
Tus histogram yog lwm qhov tseem ceeb graphical sawv cev ntawm cov ntaub ntawv, thiab nws tuaj yeem suav tias yog kev txhim kho los ntawm daim duab qhia. Nyob rau hauv ib tug histogram, cov chav kawm ntawm cov ntaub ntawv ntau yog tso tawm nyob rau hauv kab rov tav axis, thiab zaus (los yog txheeb ze zaus los yog feem pua) ntawm cov chav kawm yog tso tawm nyob rau hauv y axis. Ib txoj kab ntsug feem ntau sawv cev rau qhov zaus (lossis txheeb ze zaus lossis feem pua) ntawm chav kawm uas nws qhov siab sib npaug rau nws qhov loj. Tsis zoo li cov kab kos duab zoo tib yam, cov kab tuav tau muab tso rau kov ib leeg.
Qhov sib txawv hauv X-axis-axis tuaj yeem yog ib tus nqi sib koom lossis txwv pawg. Rau ib leeg-tus nqi pab pawg, cov txiaj ntsig sib txawv ntawm cov kev soj ntsuam yog siv los sau cov kab tuav, nrog rau txhua tus nqi nyob hauv qab nws qhov bar. Rau kev txwv pab pawg lossis txiav cov qhab nia pab pawg, cov kev txwv qis hauv chav kawm (lossis, sib npaug, cov qhab nia qis hauv chav kawm) yog siv los sau cov kab tuav. Cov qhab nia hauv chav kawm lossis cov qhab nia nruab nrab hauv chav kawm kuj tseem siv tau.
Ib qho ntawm qhov sib txawv loj nyob hauv qhov sib txawv siv hauv X-axis-axis. Hauv histogram, qhov sib txawv yog qhov sib txawv ntawm qhov sib txawv thiab tuaj yeem ua tau txuas ntxiv lossis sib cais. Thiab nws tuaj yeem siv los sawv cev cov ntaub ntawv ceev ntawm cov ntaub ntawv. Hauv qhov no, lub sijhawm siv ntawm x-axis tuaj yeem sib txawv ntawm ib qho mus rau lwm qhov, thiab ntawm y axis, qhov zaus ceev yog cim. Yog hais tias lub ncua sij hawm ntawm lub X-axis yog 1, ces lub histogram yog sib npaug zos rau cov txheeb ze zaus zajlus.
Qhov txawv ntawm Bar Graph thiab Histogram yog dab tsi?
• Ua ntej thiab qhov tseem ceeb tshaj plaws, tus histogram yog kev txhim kho los ntawm daim duab qhia, tab sis nws tsis zoo ib yam rau daim duab kab. Histograms yog ib hom kab graphs, tab sis bar graphs twv yuav raug hu tsis yog histograms.
• Bar graphs yog siv los npaj cov ntaub ntawv categorical lossis cov ntaub ntawv zoo thaum cov histograms yog siv los npaj cov ntaub ntawv ntau ntxiv nrog rau qhov ntau ntawm cov ntaub ntawv uas tau muab faib ua bins lossis ntu ntu.
• Bar graphs yog siv los sib piv cov kev sib txawv thaum cov histograms siv los qhia kev faib tawm ntawm qhov sib txawv
• Bar graphs muaj qhov chaw nruab nrab ntawm ob lub bar thaum histograms tsis muaj qhov chaw nruab nrab ntawm cov tuav. (Qhov laj thawj yog vim li cas x-axis hauv cov duab kos yog qhov sib txawv categorical qhov tseem ceeb thaum, hauv histograms, nws yog discrete lossis nruam ntau).
• Histograms yog siv los qhia txog qhov ceev ntawm qhov sib txawv hauv ntu; Hauv qhov no, thaj tsam ntawm qhov bar sawv cev qhov zaus ntawm qhov sib txawv.
