UC Irvine

At the end of the first paragraph under the subheading “Statistical Challenges to Measuring Crime Concentration”, the citation “(for an exception, see Levin et al. 2015)” should be changed to “(for an exception, see Levin et al. 2016).” The reference is listed with this erratum. In the second paragraph in the “Methods” section, the end of the first sentence should be changed from “… we adopted a small Monte Carlo simulation” to “… we adopted a Monte Carlo simulation procedure similar to Levin et al. (2016).”.