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Figure 1 | Biology Direct

Figure 1

From: Generalization of DNA microarray dispersion properties: microarray equivalent of t-distribution

Figure 1

Comparison of the observed frequency distribution to the inverse normal cumulative distribution. Quantile-quantile plots show on y-axis the observed expression and on x-axis value of the corresponding inverse normal cumulative distribution. Microarray data are derived from HuGeneFL, using IMR90 cell line with 11 samples. Panels show the probe sets with the Kolmogorov-Smirnov maximum distance D equal or close to the mean value in the specified average expression rage. Inserts provide the Affymetrix probe set identification, average expression for a given gene and standard deviation. A: probe set HG2279-HT2375_at, rank 43, expression range from 1000 to 6681 (high range, maximum), average D in the range is 0.176, sample D is 0.176; B: probe set Z23091_rna1_at, rank 5484, expression range from -0.4 to 0.4 (near-zero range), average D in the rang is 0.181, sample D is 0.182; C: probe set X95876_at, rank 7003, expression range from -20 to -923 (negative range, minimum), average D in the range is 0.183, sample D is 0.182; D: example of the probe set that failed the test – probe set M14199_s_at, rank 25, sample D is 0.204 (data Novak et al., IMR90 [10]).

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