Lorenz curve - 2025 ACF Winter

Question

Since this curve’s x-axis is the percentile of a population, this economic curve has been adapted to measure risks of disease and distribution of health resources. For 10 points each:

[10m] Name this curve. A coefficient named for an Italian is derived from the ratio of the areas this curve creates between the x-axis and a 45-degree “line of equality.”

ANSWER: Lorenz curve

[10e] The Lorenz curve and Gini coefficient can represent the inequality in this economic quantity. Programs providing a minimum amount of this quantity unconditionally are called “universal basic.”

ANSWER: income [accept universal basic income; accept income inequality]

[10h] Lakner and Milanović plotted income percentile against change in income on this curve nicknamed for an animal. This curve shows that between 1988 and 2008, income growth in the global elite dramatically outpaced rich countries’ middle classes.

ANSWER: elephant curve

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Summary


California	Main	Y	4	15.00	100%	25%	25%
Canada	Main	Y	1	10.00	100%	0%	0%
Florida	Main	Y	5	14.00	100%	20%	20%
Great Lakes	Main	Y	1	10.00	100%	0%	0%
Lower Mid-Atlantic	Main	Y	3	13.33	100%	33%	0%
Midwest	Main	Y	7	12.86	100%	14%	14%
North	Main	Y	3	20.00	100%	33%	67%
Northeast	Main	Y	1	10.00	100%	0%	0%
Overflow	Main	Y	2	10.00	100%	0%	0%
Pacific Northwest	Main	Y	7	11.43	86%	0%	29%
South Central	Main	Y	2	15.00	100%	0%	50%
Southeast	Main	Y	4	12.50	100%	25%	0%
UK	Main	Y	2	10.00	100%	0%	0%
Upper Mid-Atlantic	Main	Y	5	12.00	100%	0%	20%
2024 ARCADIA at UC Berkeley	04/19/2025	Y	1	30.00	100%	100%	100%
California	Main	N	5	20.00	100%	40%	60%
Canada	Main	N	6	23.33	100%	50%	83%
Florida	Main	N	13	14.62	100%	31%	15%
Great Lakes	Main	N	6	15.00	100%	17%	33%
Lower Mid-Atlantic	Main	N	7	12.86	100%	14%	14%
Midwest	Main	N	10	13.00	100%	10%	20%
North	Main	N	11	14.55	100%	9%	36%
Northeast	Main	N	5	12.00	100%	20%	0%
Overflow	Main	N	4	20.00	100%	50%	50%
Pacific Northwest	Main	N	12	12.50	100%	0%	25%
South Central	Main	N	5	12.00	80%	40%	0%
Southeast	Main	N	12	14.17	100%	25%	17%
Upper Mid-Atlantic	Main	N	8	12.50	100%	13%	13%
2025 ACF Nationals	2025-08-09	N	14	14.29	100%	21%	21%
2024 ARCADIA at UC Berkeley	04/19/2025	N	4	12.50	100%	0%	25%

Data


Berkeley E	Berkeley B	10	10	0	20
Stanford A	Berkeley F	0	10	0	10
Stanford B	Berkeley C	0	10	0	10
UCSC	Berkeley A	0	10	10	20
UCSD Vices and Virtues	Claremont Pitzer	0	10	0	10
Toronto A	Toronto E	0	10	0	10
UF E	UCF A	0	10	0	10
McMaster C	McGill A	0	10	0	10
McMaster A	Toronto F	0	10	0	10
Toronto C	Queen's B	10	10	10	30
Toronto H	Toronto G	0	10	0	10
OSU B	Pitt A	0	10	0	10
OSU D	CWRU D	10	10	0	20
CWRU A	Pitt C	0	10	0	10
Liberty A	Roanoke	0	10	0	10
Tennessee A	NC State	0	10	0	10
South Carolina A	North Carolina A	0	10	10	20
Tusculum	Virginia A	0	10	0	10
Virginia B	North Carolina C	0	10	0	10
North Carolina B	Virginia Tech A	0	10	0	10
Virginia Tech B	South Carolina B	10	10	0	20
NYU A	Georgetown A	0	10	10	20
Maryland A	NYU B	0	10	10	20
Johns Hopkins A	Penn A	10	10	0	20
Princeton A	Lehigh B	0	10	0	10
WashU C	Truman State	0	10	0	10
WashU B	WashU A	0	10	0	10
Illinois A	Chicago B	0	0	0	0
Indiana A	Chicago C	0	10	10	20
Chicago A	Illinois C	0	10	0	10
Michigan A	Kentucky	0	10	0	10
Purdue A	Notre Dame A	0	10	0	10
Illinois B	Purdue B	0	10	0	10
Michigan B	UIC	0	10	10	20
Carleton	Iowa State	0	10	0	10
Minnesota A	Macalester B	0	10	10	20
MIT A	Bowdoin B	0	10	0	10
Brandeis Wilson	Yale B	0	10	0	10
Brown A	Brandeis Clemenceau	0	10	0	10
Harvard	MIT B	10	10	0	20
Washington A	Alberta	0	10	0	10
Washington B	Simon Fraser	0	10	0	10
Iowa	Northwestern A	0	10	0	10
Texas B	Alberta B	0	10	0	10
Arizona State A	Ohio	0	10	0	10
UCO	Texas A	0	10	0	10
McGill D	UTD B	0	10	10	20
RIT B	Cornell-DII	10	10	10	30