How do researchers determine what is true based on the data they collect? This question is one of the central concerns of statistics, which uses mathematical models to draw useful conclusions about the real world.

Germany is a great destination for international scholars and has a high quality higher education system. The value of this level of education has been improved by the Germany's strong economy. Foreign students enjoy excellent living standards in a secure and safe surroundings. Berlin is the capital.

Requirements for the PhD program often involve the student having already obtained a Master’s degree. Additionally, a thesis or dissertation primarily consisting of original academic research must be submitted. In some countries, this work may even need to be defended in front of a panel.