To investigate the relation between the two parameters, we first used common statistical methods such as a regression of the data. In the following, the two scatterplots for the two parameters are presented. The first shows the regression of the percentage of foreigners and interventions and its statistics for the raw data, while the second shows the variable interventions with the percentage of Swiss inhabitants for the smoothed data according to the SRS and the Queen's 2 weight file. in Figure 6 the points with a 100% foreign population are selected and the blue line shows the regression without those ten points. In the second scatterplot in Figure 7, the cells with < 50% Swiss citizens are selected and the blue line shows the regression when ignoring those.