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. Author manuscript; available in PMC: 2017 Nov 7.
Published in final edited form as: Environ Sci Technol. 2017 Aug 23;51(17):10005–10011. doi: 10.1021/acs.est.7b02058

Figure 2.

Figure 2

Sampling distribution of difference in R2 value (shown as change in % variance explained) between hierarchical regressions with bioaccessible Pb and total Pb in soil as alternate predictors. A positive difference represents better performance by the model using bioaccessible Pb in soil. Dotted lines show the 2.5% and 97.5% quantiles that define the 95% confidence interval.