Table 4.

2 × C contingency table for two joint populations

Joint populationColumnsRow totals
12C
Xfx,1fx,2fx,jfx,cNx
Yfy,1fy,2fy,jfy,cNy
Column totalsC1C2CjCcN

fx,j is the number of joints observed in the jth column of sample X; Cj = fx,j + fy,j; Nx = fx,1 + fx,2 + … + fx,c; N = Nx + Ny = C1 + C2 + … + Cc.