Continuing the series of Conferences in Marburg 1993, Freiberg 1996, Muenchen 1998, Hamburg 2000, Magdeburg 2002, Karlsruhe 2004, Frankfurt 2006, Aachen 2008, Leipzig 2010, Mainz 2012 and Ulm 2014 the DMV-Fachgruppe Stochastik organizes jointly with the Ruhr-Universitaet Bochum the 12th German Probability and Statistics Days 2016 Bochumer Stochastik-Tage. The venue is at the Ruhr-Universitaet Bochum. In the tradition of the previous conferences, this meeting provides an international forum for presentation and discussion of new results in the area of probability and statistics. Contributed talks will be given in 12 sections devoted to specific topics; the highlight of each section will be one invited main talk. Over the last years, the Stochastik-Tage organized biannually have been attracting also an increasing number of participants from abroad. The conference language is English. Participants from academia, business, administration and industry are welcome.