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. 2011 Nov 28;4:81. doi: 10.1186/1755-8794-4-81

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Copyright ©2011 Earp et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Box plots of array variance for three Illumina array types. Box plots of var(e_array(x,y)) for Illumina 1M-Duo, 1M-Single, and 660-Quad arrays for normalized and raw data. The 1M-Duo arrays were genotyped in two batches and are plotted stratified by batch ("1M-Duo-Batch 1", "1M-Duo-Batch 2"), as well as by array type "1M-Duo". The number of var(e_array) estimates for each array type is: 1M-Duo, n = 45; 1M-Duo-Batch 1, n = 18; 1M-Duo-Batch 2, n = 27; 1M-Single, n = 11; 660-Quad, n = 360. Box plot whiskers are plotted at the lowest datum within 1.5 the interquartile range of the lower quartile, and the highest datum within 1.5 the interquartile range of the upper quartile.