Figure 4From: Multifactorial experimental design and the transitivity of ratios with spotted DNA microarraysLength of ORF, average spot diameter, and the coefficient of variation of gene expression level. The coefficient of variation estimated for a given gene does not depend upon A) the ORF length, or B) the average spot diameter. Error bars are +/- 2 standard errors of the mean. Larger error bars at either extreme are due to smaller sample size in those size classes and do not reflect a greater standard deviation of the measurements.Back to article page