Table 3.

Comparison of the coefficients of standard deviation function derived from the consecutive sampling and individual probe sets

Array	No. of samples	Pair-wise a1	Individual genes a1	Difference %	Pair-wise a2	Individual genes a2	Difference %
HuGene FL (IMR90)	11	6.0	5.9	1.8	0.082	0.076	7.3
Focus	9	2.9	2.9	1.7	0.153	0.154	-0.6
MG-U74Av2	11	5.1	4.4	12.8	0.161	0.136	15.6
Illumina 1	4	2.7	2.4	12.2	0.092	0.085	7.7
Illumina 2	4	2.2	2.1	2.6	0.096	0.082	14.7
mean difference %	---	---	---	6.2	---	---	9.0

Columns pair-wise a1 and pair-wise a2 are the coefficients of the standard deviation characteristic function derived from the consecutive sampling. Columns individual genes a1 and a2 show the values derived from the individual probe sets and difference is the difference in % between the two methods.