Table 2.

Frequency counts of samples in each class for single genes.

Class	${\mathrm{x}}_{ij}>{\overline{\mathrm{x}}}_{\bullet j}$	${\mathrm{x}}_{ij}<{\overline{\mathrm{x}}}_{\bullet j}$	Total
C 1	Sf 11	Sf 12	Sn 1 = Sf 11 + Sf 12
⋮	⋮	⋮	⋮
C m	Sf m1	Sf m2	Sn m = Sf m1 + Sf m2
Total	$S{T}_1={\displaystyle \sum }_{k=1}^m{Sf}_{k1}$	$S{T}_2={\displaystyle \sum }_{k=1}^m{Sf}_{k2}$	$SN={\displaystyle \sum }_{k=1}^m{Sn}_k$