Ukuhlaziywa Kwedatha Yabantu Kusetshenziswa Imidwebo Namagrafu
Ukuhlaziywa kwedatha yabantu kuyisinyathelo esibalulekile ekuhleleni intuthuko, ukwenziwa kwenqubomgomo yomphakathi, kanye nokuhlolwa kohlelo lwezenhlalo nezomnotho. Imininingwane efana nosayizi wabantu, ukusatshalaliswa kwendawo, isakhiwo seminyaka, amazinga okuzalwa nokufa, kanye namazinga okufuduka ayinalutho uma ivezwa kuphela ngesimo samathebula amade. Ngakho-ke, imidwebo namagrafu kuyithuluzi elibalulekile lokwenza lula ulwazi, ukubonisa amaphethini, nokugqamisa izitayela ezingaba nzima ukuzibona ngqo. Lesi sihloko sixoxa ngendlela ukuhlaziywa kwedatha yabantu okungenziwa ngayo kusetshenziswa imidwebo namagrafu, kufaka phakathi izinhlobo ezifanele zokubona kanye nendlela yokuzichaza.
Kungani Ukubona Izinto Kubalulekile Kudatha Yabantu?
Idatha yabantu ngokuvamile inkulu (inkulu ngobuningi), inobukhulu obuningi (iqukethe izinto eziningi), futhi iyashintsha ngokuhamba kwesikhathi. Ukubona ngeso lengqondo kusiza ngezindlela eziningana ezibalulekile. Okokuqala, kusheshisa ukuqonda: abafundi bangaqonda izitayela ngemizuzwana embalwa nje. Okwesibili, kwenza kube lula ukuqhathanisa: isibonelo, ukuqhathanisa izinombolo zabantu kuzo zonke izifunda, ubulili, noma izikhathi. Okwesithathu, kuqinisa ukuxhumana kwenqubomgomo: ohulumeni nezikhungo ezifanele baveza kalula isizathu ngemuva kohlelo uma besekelwa amagrafu acacile. Okwesine, kusiza ekutholakaleni kwezinkinga: ukuphakama, ukwehla okukhulu, noma amaphethini angavamile kungabonakala ngokushesha ngamagrafu.
Noma kunjalo, izithombe kufanele zakhiwe ngendlela efanele. Ukukhetha uhlobo lweshadi, isikali, kanye nendlela yokubonisa idatha kungathonya ukuhumusha. Amagrafu angalungile abeka engcupheni izinqumo ezidukisayo.
Izinhlobo Zedatha Yabantu Evame Ukuhlaziywa
Ngaphambi kokunquma imidwebo namagrafu, kubalulekile ukuqonda iziguquguquko ezivame ukusetshenziswa ezifundweni zabantu:
1. Inani labantu (ngesifunda, unyaka, noma isigaba esithile).
2. Ukukhula kwenani labantu (izinga lokukhula minyaka yonke, ukukhula kwemvelo, izilinganiso).
3. Ubudala kanye nesakhiwo sobulili (ukwakheka kwabantu asebekhulile abakhiqizayo, asebekhulile, izingane).
4. Ubuningi babantu (inani labahlali nge-km² ngayinye).
5. Ukuzala kanye nokufa (izinga lokuzalwa, izinga lokufa, isikhathi sokuphila).
6. Ukufuduka (ukufuduka, ukufuduka ngaphandle, kanye nokufuduka okune-intanethi).
7. Izici zomphakathi ezifana nemfundo, umsebenzi, ukufudukela emadolobheni, kanye namazinga obumpofu.
Uhlobo ngalunye lwedatha ludinga amasu ahlukene okubona ngeso lengqondo ukuqinisekisa ukuthi ulwazi oludlulisiwe luhlala lunembile.
Ishadi Lebha Lokuqhathanisa Phakathi Kwezifunda Nezigaba
Amashadi ebha ayisinqumo esiyinhloko lapho inhloso yokuhlaziya iwukuqhathanisa amanani kuzo zonke izigaba. Isibonelo, izinombolo zabantu ezifundazweni eziningana, izinombolo zabantu ngokwezinga lemfundo, noma izinombolo zabantu basemadolobheni uma kuqhathaniswa nezasemakhaya. Inzuzo yamashadi ebha ukuthi kulula ukuwafunda futhi awadingi ukuchazwa okuyinkimbinkimbi.
Ngokwesimo sabantu, amashadi ebha angadalwa ngendlela yebha eqoqwe ndawonye ukuze kuqhathaniswe izinto ezimbili ngesikhathi esisodwa, isibonelo, inani labahlali besilisa nabesifazane esifundeni ngasinye. Ngaphezu kwalokho, imishado ehlanganisiwe iyasebenza ekuboniseni ukwakheka, isibonelo, isilinganiso seminyaka engu-0-14, 15-64, kanye no-65+ ngaphakathi kwesifunda. Kodwa-ke, imishado ehlanganisiwe ngezinye izikhathi kunzima kakhulu ukuyisebenzisa ekuqhathaniseni izigaba eziphakathi, ngakho-ke kudingeka amalebula noma amaphesenti acacile.
Ishadi Lomugqa Lokubuka Izitayela Zesikhathi
Amashadi omugqa asetshenziswa kangcono ukubuka izinguquko enkombeni ngokuhamba kwesikhathi. Isibonelo, izitayela zokukhula kwabantu eminyakeni eyi-10-20, izinguquko emazingeni okuzalwa, noma izinguquko kubantu basemadolobheni. Amashadi omugqa abonisa indlela yokushintsha: ukwanda, ukwehla, ukuzinza, noma ukushintshashintsha.
Ukuze kuhlaziywe okunenjongo kakhudlwana, igrafu yomugqa ingabonisa imigqa eminingi ngesikhathi esisodwa, isibonelo, ukuthambekela kwabantu emadolobheni amakhulu amathathu. Kodwa-ke, inani lemigqa akufanele libe ngaphezulu, njengoba lokhu kungenza igrafu ibe nzima ukuyifunda. Ngaphezu kwalokho, izikali ze-axis ezisetshenziswayo kufanele zihambisane ukuze kugwenywe umbono wezinguquko ezinkulu kakhulu noma ezincane kakhulu.
Ishadi Lephayi Lokwakheka, Namanothi
Amashadi ephayi avame ukusetshenziswa ukukhombisa amaphesenti ezingxenye ezihlobene nengqikithi, njengokwakheka kwabantu ngokwenkolo, umsebenzi, noma isilinganiso sasemakhaya namadolobha. Lokhu kuboniswa kulula ukukuqonda, kodwa kunemikhawulo: uma kunezigaba eziningi kakhulu noma umehluko wamaphesenti mncane, kungaba nzima ngomfundi ukubona usayizi wezingcezu.
Ngakho-ke, amashadi ephayi kufanele asetshenziswe kuphela uma inani lezigaba lincane (cishe 3-5) futhi umehluko ngesilinganiso ucacile. Ezimweni ezinezigaba eziningi, amashadi ebha avame ukusebenza kangcono kuneshadi lephayi.
Iphiramidi Yabantu Ngokwesakhiwo Sobudala Nobulili
Esinye sezibonakaliso ezivame kakhulu ku-demography yi-population pyramid. Le grafu ibonisa ukusatshalaliswa kwesibalo sabantu ngokweminyaka ku-vertical axis, kanye nenani noma iphesenti labantu ku-horizontal axis, ngokuvamile ehlukaniswa ngabesilisa (kwesobunxele) nabesifazane (kwesokudla).
Amaphiramidi abantu angabonisa indlela yokuthuthukiswa kwabantu:
– Uhlobo olubanzi (isisekelo esibanzi): izinga lokuzalwa eliphezulu, intsha ebusayo.
– Isimo esingaguquki (esilinganiselayo): ukuzalwa kuyancipha, isakhiwo sizinzile.
– Isimo esiqinile (isisekelo esincane, ingaphezulu elibanzi): inani labantu asebekhulile, inani elikhulayo labantu asebekhulile.
Kusukela kule phiramidi, abahlaziyi bangafinyelela iziphetho mayelana nesidingo sezinsizakalo zomphakathi: izikole nezikhungo zezingane kubantu abasebasha, noma izinsizakalo zezempilo kanye nokuphepha komphakathi kubantu asebekhulile.
I-Histogram Yokusabalalisa Namaphethini Okusabalalisa
Ama-histogram asetshenziselwa ukubona ngeso lengqondo ukusatshalaliswa kwedatha yezinombolo eqhubekayo, njengokusatshalaliswa kweminyaka yabantu (hhayi ngamaqembu eminyaka achazwe), ukusatshalaliswa kwemali engenayo, noma ukusatshalaliswa kwabantu kuzo zonke izifunda. Ngama-histogram, singabona ukuthi idatha ivame ukuba nokulingana, ithambekele kwesokudla noma kwesobunxele, noma inama-peak amaningi (ama-multimodal).
Ezifundweni zabantu, ama-histogram asiza ukuqonda ukungalingani. Isibonelo, uma ukusatshalaliswa kobuningi babantu kuphambene kakhulu, kusho ukuthi kukhona ukuqoqwa okukhulu kwabantu endaweni ethile, okungathinta izindlu, ezokuthutha kanye nemvelo.
I-Scatter Plot yobudlelwano phakathi kwe-Variables
Izahluko ze-scatter ziwusizo kakhulu ekuhlaziyeni ubudlelwano phakathi kwezinto eziguquguqukayo. Isibonelo, ubudlelwano phakathi kobuningi babantu kanye namazinga obumpofu, noma phakathi kwamazinga emfundo kanye namazinga okuzalwa. Ngezahluko ze-scatter, singabona ukuthi izinto eziguquguqukayo zivame ukuba nobudlelwano obuhle, obubi, noma obungahlobene.
Ama-Scatter plots angandiswa futhi ngokungeza ishadi lebhamuza ukuze limele i-variable yesithathu, isibonelo, usayizi webhamuza omele inani labantu besifunda ngasinye. Lokhu kusiza ekucebiseni ukuhlaziywa ngaphandle kokubonisa amashadi amaningi ahlukene.
Amamephu Ezihloko (Choropleth) Zokusatshalaliswa Kwendawo
Uma ukuhlaziya kuhilela indawo, amagrafu avamile ngezinye izikhathi awanele. Amamephu anezihloko, noma amamephu e-choropleth, abonisa amanani edatha anemigqa yemibala ngokusekelwe esifundeni. Isibonelo, imephu yobuningi babantu ngesifunda, imephu yamazinga okukhungatheka ngesifundazwe, noma imephu yokufuduka okunetha.
Inzuzo yamamephu anezihloko yikhono lawo lokubonisa amaphethini endawo: ukuthi yiziphi izindawo ezinabantu abaningi, ezithola ukukhula okusheshayo emadolobheni, noma ukuthi yiziphi izindawo ezidinga ukungenelela komphakathi. Kodwa-ke, amamephu anezihloko kumele asebenzise ukuhlukaniswa kwemibala okufanele kanye nezinganekwane ezicacile ukuze kugwenywe ukuchazwa kabi.
Izinyathelo Zokuhlaziywa Kwedatha Yabantu Esekelwe Ekuboneni
Ukuze amagrafu namadayagramu asekele ngempela ukuhlaziywa, kudingeka izinyathelo zomsebenzi ezihlelekile:
1. Nquma inhloso yokuhlaziya: ukuthi ufuna ukuqhathanisa izifunda, ukubona izitayela zesikhathi, noma ukuhlola ubudlelwano phakathi kweziguquguquko.
2. Hlanza idatha: qiniseka ukuthi akukho datha engenalutho, ukukopisha, noma amaphutha okufaka.
3. Khetha umbono ofanele: lungisa uhlobo lwedatha (isigaba, isikhathi, ukusatshalaliswa, indawo).
4. Ukulebula kanye nomongo: isihloko, iyunithi, umthombo wedatha, kanye nenkathi kumele kucace.
5. Chaza imiphumela: funa amaphethini, izitayela, izinto ezingaphandle, kanye nemiphumela yenqubomgomo.
6. Ukuhlola ukuvumelana: ukuqhathanisa neminye imithombo noma izikhathi ezahlukene zokuqinisekisa.
Ngalezi zinyathelo, ukubona ngeso lengqondo akuyona nje indlela yokuhlobisa umbiko, kodwa kuba ithuluzi lokuhlaziya ngempela.
Isiphetho
Ukuhlaziya idatha yabantu kusetshenziswa imidwebo namagrafu kuyindlela ephumelelayo yokuqonda izimo zabantu kanye nokuguquguquka kwabo. Amashadi ebha alula ukuqhathanisa izigaba, amagrafu omugqa abonisa izitayela zesikhathi, amaphiramidi abantu achaza isakhiwo sobudala nobulili, ukusatshalaliswa kwemephu yama-histogram, ama-scatter plots ahlola ubudlelwano phakathi kwezinto eziguquguqukayo, kanye namamephu anezihloko aveza amaphethini endawo. Isihluthulelo sempumelelo sisekukhetheni imiboniso efanelekile, ukunikeza isethulo esicacile, kanye nokuhumusha ngokucophelela. Ngokubona okuhle, idatha yabantu inganikeza isisekelo esiqinile sokuhlela intuthuko eqondiwe kakhulu futhi eqhubekayo.
