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Table 1 Descriptive Statistics

From: Lead exposure and the 2010 achievement test scores of children in New York counties

Variable

Mean

Standard Deviation

Minimum

Maximum

Percent scoring at lowest level, ELA grade 3

12.2

2.7

7.1

18.8

Percent scoring at lowest level, ELA grade 8

6.9

1.8

3.2

11.1

Percent scoring at lowest level, math grade 3

8.6

2.5

3.3

15.9

Percent scoring at lowest leve, math grade 8

7.5

2.4

3.8

13.3

Percent with blood lead > 10, 2003-2005

1.69

1.07

0.31

5.3

Percent with blood lead > 10, 2005-2007

1.38

0.89

0.20

4.14

Income, 2004

42,726

9,623

33,791

75,514

Income, 2008

51,095

12,948

39,821

94,856

  1. N = 57 counties for all variables.