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Table 1 Fold change values needed to achieve p = 0.0026 (3σ deviation), as a function of the number of repeats and the intensity.

From: Intensity dependent estimation of noise in microarrays improves detection of differentially expressed genes

  n = 1 n = 2 n = 3
I = 4 (σ ≈ 0.45) 3.73 2.53 2.12
I = 8 (σ ≈ 0.2) 1.8 1.51 1.4
  1. The values of σ were taken from the example described in the text.