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Figure 4 | BMC Bioinformatics

Figure 4

From: Evaluation of methods for oligonucleotide array data via quantitative real-time PCR

Figure 4

Variability of methods within biological replicates as related to signal intensity. For each version of the data, the standard deviation of measurements within each of the four biological groups was calculated, and these were pooled to form a single standard deviation for each gene. These were plotted against the mean intensity for that gene, and fitted with a non-parametric smoother to summarize the trend. The fitted smooths are shown above. MAS5 shows the greatest variability, and MAS5 and the dChip mismatch model both show greater variability at low intensities.

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