The accuracy of Statistics Norway’s national population projections

In addition, we need the population for each year and the registered start population, as well as the start population used in the projections.8 Due to the fact that the start population is taken directly from the population register, there are no errors in the start population. [...] However, very small errors in the registers in the form of inconsisten- cies between the changes in the population stock and the sums of the change components do occur. [...] 5 Results 5.1 Evaluating the accuracy of the national population projections since 1996 An assessment of the accuracy of the projections includes examining the projected and the registered population. [...] 17 5.1.3 Fertility and the number of births The number of births is affected by the fertility level, the proportion of immigrant women, as well as the composition of the population of immigrant women in terms of their country group of origin and their length of stay. [...] 5.2 How much do the errors in each component contribute to the total error? To be able to compare the contribution of each component to the total error in the projections, we decompose the errors into errors that can be attributed to errors in the number of births (PEB), number of deaths (PED) and net migration (PEN), and the errors are portrayed in Fig- ures 12-14, whereas the corresponding estim.