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Table 2 Additional variance when determining fold-changes on two chips (technical replication).

From: Construction and validation of the APOCHIP, a spotted oligo-microarray for the study of beta-cell apoptosis

concentration μg/20 μL Extra variance 2ωm2
1/3 -0.001 0.024
1 -0.001 0.015
2 0.003 0.012
3 -0.004 0.012
4 -0.003 0.012
  1. The first column is the additional variance where a positive value indicates additional variance. The last column is the variance of the measurement error obtained from Table 1 and is included for comparison.