I-Gini Coefficient: Ukulinganisa Ukungalingani Kwezomnotho Emphakathini
I-Pendahuluan
I-Gini coefficient ingenye yamathuluzi ezibalo asetshenziswa kakhulu ukukala ukungalingani kwemali engenayo noma ukusatshalaliswa kwengcebo ngaphakathi kwenani labantu. Yethulwe yisazi sezibalo sase-Italy uCorrado Gini ngo-1912, isibe uphawu olubalulekile ekuhlaziyweni kwezomnotho nezenhlalo, ikakhulukazi ekuhloleni ukulingana kanye nezinqubomgomo zenhlalakahle yomphakathi.
Imiqondo kanye namafomula
I-Gini coefficient ivezwa njengenombolo ephakathi kuka-0 no-1, yize ingavezwa njengephesenti eliphakathi kuka-0 no-100. Inani lika-0 libonisa ukulingana okuphelele, lapho wonke umuntu noma umndeni unemali engenayo efanayo. Ngokuphambene nalokho, inani lika-1 libonisa ukungalingani okuphelele, lapho umuntu oyedwa noma umndeni ulawula yonke imali engenayo noma ingcebo. Ngokwezibalo, i-Gini coefficient ibalwa ngokuqhathanisa indawo ngaphansi kwejika likaLorenz, elimelela ukusatshalaliswa kwemali engenayo okuqongelelekayo.
Ijika likaLorenz libonisa iphesenti elihlanganisiwe lemali engenayo elitholwa yiphesenti elihlanganisiwe labantu. Uma ijika likaLorenz lisuka emugqeni wokulingana (umugqa oqondile obonisa ukusatshalaliswa okuphelele), kulapho ukungalingani kulowo mphakathi kukhulu khona.
Indlela Yokubala
Ukuze siqonde ukuthi i-Gini coefficient ilinganiswa kanjani, sidinga ukubheka ukuthi ibalwa kanjani. Enye indlela yokubala i-Gini coefficient ukusebenzisa ifomula elandelayo:
G = 1 – 2 ∫(L(p)) dp
lapho u-G eyi-Gini coefficient, u-L(p) uyi-Lorenz curve, kanti u-p uyiphesenti labantu. Izibalo ezingokoqobo zivame ukwenziwa ngokuhlela imali engenayo yomuntu ngamunye noma yomndeni ngokulandelana okukhuphukayo, bese kubalwa ukusatshalaliswa kwayo okuqongelelekayo.
Ukusetshenziswa kanye nokubaluleka kwe-Gini Coefficient
Emazweni amaningi, i-Gini coefficient isetshenziswa njengenkomba yokuhlola ukulingana kwezomnotho nokusiza ekwakhiweni kwenqubomgomo yomphakathi. Inani eliphakeme lingakhuthaza ohulumeni ukuthi basebenzise izinqubomgomo zokwabiwa kabusha kwengcebo, njengentela eqhubekayo noma uxhaso oluya emaqenjini anemali engenayo ephansi, ukuze kuncishiswe igebe lezomnotho.
Esimweni somhlaba wonke, i-Gini coefficient ingasiza ekuqhathaniseni ukungalingani phakathi kwamazwe. Isibonelo, amazwe aseNordic afana neNorway neSweden avame ukubonisa ama-Gini coefficient aphansi ngenxa yezinhlelo zawo zomphakathi ezisekela inhlalakahle kanye nokwabiwa kabusha kwemali engenayo. Ngakolunye uhlangothi, amazwe asathuthuka noma amazwe abhekene nezinkinga zomnotho angabonisa ama-Gini coefficient aphezulu ngenxa yokusatshalaliswa okungalingani kwezinsiza.
Izinto Ezibangela Ukungalingani
Izici ezahlukahlukene zingabangela izinga lokungalingani emphakathini, okuthinta ngqo i-Gini coefficient. Ezinye izici ezibalulekile zifaka:
1. Imfundo: Ukufinyelela ngokulinganayo emfundweni esezingeni eliphezulu kungabangela umehluko ekhonweni lokuthola umsebenzi omuhle, ngaleyo ndlela kwandise ukungalingani kwemali engenayo.
2. Imisebenzi kanye Nemiholo: Imakethe yezabasebenzi engalingani ngokwezidingo kanye nokutholakala kwayo ingabangela ukungalingani okukhulu kwemiholo phakathi kwemikhakha.
3. Inqubomgomo Yentela Nokwabiwa Kabusha: Uhlelo lwentela olungathuthuki kanye nokuntuleka kokudluliselwa kwezinkokhelo zomphakathi kungandisa igebe lemali engenayo emphakathini.
4. Ukufinyelela Imali Nesikweletu: Amandla okufinyelela imali yebhizinisi kanye nesikweletu angandisa amathuba ezomnotho kanye nengcebo, okungatholakali ngokulinganayo kuzo zonke izigaba zomphakathi.
Umphumela Wokungalingani
Amazinga aphezulu okungalingani ezweni noma esifundeni awagcini nje ngokuba nomthelela kwezomnotho kodwa futhi anemiphumela kwezenhlalo nakwezepolitiki. Eminye yale miphumela ihlanganisa:
– Ukungazinzi Komphakathi Nokwezepolitiki: Ukungalingani okukhulu kungabangela ukunganeliseki komphakathi, okuholela ezingxabanweni noma ekungazinzini kwezepolitiki. Lokhu kungavimbela ukukhula komnotho kwesikhathi eside.
– Izithiyo Zokuthuthukiswa Komnotho: Njengoba kunokungalingani okukhulu, ukusetshenziswa kwemali kuzogxila emaqenjini asezingeni eliphezulu, okuvimbela intuthuko yemakethe yasekhaya okufanele ibe yinjini yokukhula komnotho.
– Ukuguguleka Kokwethembana Komphakathi: Igebe elikhulu phakathi kwabacebile nabampofu linganciphisa umuzwa wobumbano lomphakathi, liqede ukuxhumana komphakathi kanye nokwethembana phakathi kwezakhamuzi.
Imizamo Yokunciphisa Ukungalingani
Ukubhekana nokungalingani kudinga isu eliphelele kanye nezinqubomgomo eziqhubekayo. Eminye imizamo engaba khona ihlanganisa:
– Imfundo Esezingeni Eliphezulu Nengabizi: Ukuthuthukisa ukufinyelela kanye nekhwalithi yemfundo kunganikeza amathuba alinganayo futhi kunciphise ukungalingani kwemali engenayo esikhathini esizayo.
– Izinqubomgomo Zokuguqulwa Kwentela Nokwabiwa Kabusha: Ukwethula uhlelo lwentela oluqhubekayo nokwandisa ukudluliselwa kwezenhlalo kanye nezibonelelo kungasiza ekwabiweni kabusha kwemali engenayo.
– Ukuthuthukiswa Komnotho Nokufinyelela Kwesikweletu: Ukusekela amabhizinisi amancane naphakathi kanye nokunikeza ukufinyelela okubanzi kwesikweletu kanye nemali yebhizinisi kunganciphisa ukuthembela kwezomnotho emaqenjini ambalwa.
– Ukuqinisa Ukuvikeleka Komphakathi: Uhlelo oluqinile lokuvikeleka komphakathi lungavikela amaqembu anemali engenayo ephansi ezinkingeni zomnotho futhi lusekele ukuzinza komphakathi.
Isiphetho
I-Gini coefficient iyithuluzi elibalulekile lokulinganisa nokuqonda ukungalingani kwezomnotho ezweni noma esifundeni. Njengoba inethonya elikhulu ezinqubweni zomnotho nezenhlalo, ukuhlaziya kusetshenziswa i-Gini coefficient kunikeza ukuqonda okujulile ngesimo sokulingana emphakathini. Nakuba izinselele zinkulu, ngamasu afanele kanye nokuzibophezela okuqinile kwezepolitiki, ukungalingani kungancishiswa, kudalwe umphakathi onobulungiswa nochumayo kubo bonke.
