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Water — District

Greenvale Water District (synthetic)
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Disclosure control Suppression k = 15 1 customer ≤ 15% complementary on Methods & formulas

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Gini coefficient
0.966
across 250 accounts
Coefficient of variation
9.471
std ÷ mean
Median use / account
338
CCF/yr
High outliers
41
Tukey 1.5·IQR

Lorenz curve

Cumulative share of consumption vs. cumulative share of accounts. The further the curve bows below the equality line, the more concentrated use is.

Percentiles (CCF/yr)

10th percentile 155
25th percentile226
Median (50th)338
75th percentile623
90th percentile 2195
Gini (1912); Lorenz (1905); coefficient of variation & Tukey's IQR outlier rule (standard statistics).