TABLE 2

The expectation, E(Rn), of Rn

HomoHet
λ/m0:84:48:00:3216:1632:00:84:4
114.1022.9628.3829.6577.99113.511.9421.77
420.6925.8728.3856.3991.84113.518.4024.83
1625.3827.5428.3882.78103.5113.524.0626.95

Sample size is n = 20 and σ2 = 0. Above each column is shown the values of ν and ρ as ν:ρ; Homo, rate homogeneity; Het, rate heterogeneity (ζ = 1). The expectations for 8:0 and 32:0 are the theoretical values (cf. Equation 12), which also apply for σ2 > 0. All other expectations are obtained from Equations 17 and 18. E(Rn) depends on λ and m only through λ/m. Rate heterogeneity lowers the expectation compared to rate homogeneity.