Table 3.

Coefficient of Variation (CV) of Fold Changes from Mouse Array Data

Threshold	Mean CV of fold changes	CV standard deviation
1	44.6%	0.243
25	34.6%	0.136
50	31.7%	0.111
75	30.7%	0.104
100	29.9%	0.095
125	29.3%	0.092
150	29.1%	0.088
175	29.2%	0.089
200	28.9%	0.089
225	29.1%	0.091
250	29.3%	0.093

Threshold is the average difference value that all the samples had to have for the ratios to be calculated for that gene.