. 2007 Feb 26;8(2):R24. doi: 10.1186/gb-2007-8-2-r24

Table 3.

Contingency table (with margins) for DNA motifs

	A	C	G	T	-
X	N_XA	N_XC	N_XG	N_XT	N_X
Y	N_YA	N_YC	N_YG	N_YT	N_Y

	N_A	N_C	N_G	N_T	N

This table is used for computing columnwise scores for Pearson χ²and for Fisher-Irwin exact test. A similar table with 20 columns is used for protein motifs.

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