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. 2006 May;18(5):1152–1165. doi: 10.1105/tpc.106.041111

Table 3.

A 2 × 2 Contingency Table Comparing the Observed and Expected Numbers of Single versus Duplicate Copy Genes under the Hypothesis of Independence between the Two Lineages Using a χ2 Test of Independence

A. thaliana Genes
Single Duplicated Sum
Cleome Single 19 (14.4) 5 (9.6) 24
    Genes Duplicated 11 (15.6) 15 (10.4) 26
Sum 30 20 50
χ2 Test
χ2 Value: 7.065
P value: 0.00786**

Asterisks indicate that the result is significant at the 0.01 level.