The statistical uncertainties of the e+jets, μ+jets and dilepton measurements are not correlated. The mass dependence of the statistical uncertainty is taken into consideration for the measurements that are combined.

The statistical uncertainty of the measurements is linear dependent to the top mass: δΜtopstat = κ + λ Μtop

Table 1 summarizes the κ and λ coefficients for the three measurements:

Table 1: Dependence of the statistical uncertainty to the top mass through coefficients κ and λ.

The statistical uncertainty of the combined measurement is δΜtopstat = 7.2 GeV