A Unified Approach to Measuring Poverty and Inequality
20th percentile per capita expenditure [1,B]. It is evident that Shida Kartli has a lower quantile PCE at the 10th percentile than Samegrelo but a larger quantile PCE at the 90th percentile. As a result, the 90/10 quantile ratio of Shida Kartli [3,F] is higher than the 90/10 quantile ratio of Samegrelo [8,F]. Lessons for Policy Makers This table is helpful in holistically understanding inequality across the per capita consumption expenditure distribution. The mean and median measure a distribution’s central tendency and measure. The Gini coefficient is a single measure of the overall distribution, but it does not provide any information about which part of the distribution has changed. The four additional quantile PCEs reported in the table provide further information about different parts of the distribution. Partial Means and Partial Mean Ratios Table 3.13 reports two lower partial means, two upper partial means, and two partial mean ratios for Georgia’s subnational regions in 2003. Columns A and B report the two lower partial means, columns C and D report the two upper partial means, and columns E and F report the partial mean ratios. The first of the partial mean ratios, for example, reports the 90/10 partial
Table 3.13: Partial Means and Partial Mean Ratios for Subnational Regions, 2003 Lower partial mean Upper partial mean Partial mean ratio (%)
Region 1 2 3 4 5 6 7 8 9 10 11
Kakheti Tbilisi Shida Kartli Kvemo Kartli Samtskhe-Javakheti Ajara Guria Samegrelo Imereti Mtskheta-Mtianeti Total
p10
p20
p20
p10
90-10
A
B
C
D
E
80-20 F
25.6 44.1 26.2 23.9 30.5 26.2 35.9 30.8 39.8 25.0 31.5
35.9 54.9 37.1 32.3 41.5 36.5 45.8 40.1 52.4 34.7 42.3
222.3 286.7 263.3 186.7 234.4 222.4 275.3 241.1 299.1 222.7 260.5
276.0 348.8 331.0 230.9 294.8 273.4 337.2 302.9 362.1 265.7 320.4
90.7 87.3 92.1 89.6 89.6 90.4 89.4 89.8 89.0 90.6 90.2
83.8 80.9 85.9 82.7 82.3 83.6 83.4 83.4 82.5 84.4 83.8
Source: Based on ADePT Poverty and Inequality modules using Integrated Household Survey of Georgia 2003 and 2006.
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