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Table 1 Descriptive statistics of all socioeconomic characteristics considered across all census tracts

From: Urban slum structure: integrating socioeconomic and land cover data to model slum evolution in Salvador, Brazil

Census variables

Minimum

1st quartile

Median

Mean

3rd quartile

Maximum

Proportion of households:

      

Without a bathroom*

0.000

0.000

0.006

0.022

0.018

0.598

Without garbage collection

0.000

0.964

0.998

0.938

1.000

1.000

Where garbage is thrown on an empty lot or street*

0.000

0.000

0.000

0.044

0.017

0.902

With more than 6 residents*

0.000

0.112

0.154

0.147

0.186

0.400

Connected to a sewer

0.000

0.004

0.023

0.154

0.168

1.000

With piped water *

0.000

0.910

0.972

0.923

0.996

1.000

With female head of household

0.011

0.320

0.376

0.375

0.430

0.747

Proportion of heads of households:

      

With more than 8 years of education

0.040

0.344

0.500

0.526

0.725

0.968

That are illiterate

0.000

0.015

0.062

0.075

0.115

0.511

Census tracts where the:

      

Average income of heads of households per month*

99.570

286.200

421.500

833.9

893.800

7978.000

Population density

0.000

210500

589800

1126000

1239000

124900000

  1. * Variables that met the linearity requirement and met the UN-HABITAT definition for urban slum.