Table 3.

Number of genes found in different window sizes: Comparison of the Aroclor 1254-regulated gene list (857 genes) with the mean of 100 randomized gene lists (857 genes, respectively).

WINDOW SIZES ANALYSED [KBP]	100 RANDOMIZED GENE LISTS (857) (MEAN OF THE EXPECTED NUMBER OF GENES)	STANDARD DEVIATION	EXPECTED PROBABILITY [%]	AROCLOR 1254 REGULATED GENES (857) (OBSERVED NUMBER OF GENES)	SIGNIFICANCE (P VALUE)
50	30.01	5.5496	3.60	54	0.00001712
100	27.15	5.5621	3.26	33	0.03838451
200	44.9	7.0231	5.38	47	0.05681548

For each window size, the expected number of genes is shown along with the observed number of genes. The expected numbers of genes arise from the mean of 100 randomized gene lists comprising the same number of genes than the Aroclor 1254-regulated gene list. The expected probability [%] describes the number of genes as percentage for a given window size. Here, all genes from the randomized lists (857) are set to 100 %. Further the p value is shown for obtaining such a result by chance using the binominal distribution.