When averaging the growth rates sorted to the interventions in their region, a variance of 0.179 was computed and we have therefore a standard deviation of 0.398 % for the expected population growth rate overall. The regression has a R2 of 0.568 and a slope of 0.187.

Discussion

The correlation between the two parameters expected population growth and police interventions nowadays is significant. Still, the R2 is not that high and no clear correlation can be clearly stated. Also, the residuals of the only seven parameters are rather high. If we compare the visual trends in the two maps, it is obvious, that the areas with a high population growth had generally more police interventions in the last years in their neighborhood. This underlines our hypothesis as not entirely false, but to be further investigated with more data.  
Certainly, an enhanced attractivity according to high criminality is not only couterintuitive, but also unrealistic. Therefore, the existing connection, also if not very clear, has to be explained with other properties of the two parameters. The link could be found in the populated areas, that build a structural source for economic centers and jobs. This is attracting more people to live in the area, but also attracts effects like poverty, homeless people, drug consume and crime \cite{Glaeser_1999}. Following to those effects, regions with a higher crime rate are at the same time an attractive place for new people, as they have an existing infrastructure and act as economic centers.
Thus, an indirect connection between population growth and police interventions can be found according to those analysis. It needs to be pointed out, that we operate on a local scale in one municipality and we can therefore not generalize the results.
In further investigations, the results could be compared to the general rise of the immigrant rate in Switzerland. With more information about the expected development of metropolitan areas and their distribution of criminality, more detailed statements could be drawn. Also the research of more secondary literature on this topic could be interesting, while it still not that easy to find.