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. 2013 Oct 31;8(10):e77793. doi: 10.1371/journal.pone.0077793

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© 2013 Alis, Lim

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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The bootstrapped median utterance length plotted against A. 2011 resident Black population in percent (), B. persons 25 years and over who are high school graduates or higher from 2007 to 2011, in percent () and C. Median household income from 2007 to 2011 in thousands of dollars (). The linear regression line is also shown in each plot.

Inline graphic — The bootstrapped median utterance length plotted against A. 2011 resident Black population in percent (), B. persons 25 years and over who are high school graduates or higher from 2007 to 2011, in percent () and C. Median household income from 2007 to 2011 in thousands of dollars (). The linear regression line is also shown in each plot.