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. 2008 Jun 1;113(3):143–156. doi: 10.6028/jres.113.011

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The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.

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Fig. 3 — Plot of $\bar{x}$ vs. σ for various values of μ; note that for any particular $\bar{x}$ the possible values of μ are always greater than $\bar{x}$ resulting in a bias of $\bar{x}$ toward the resolution unit.