You can attand an equivalent course during your master. The lecturer of the mandatory course decides which courses are equivalent and you need an equivalence form signed by her.
In the case of Stochastik 1 you could do the following: 1) show that you attanded an equivalent Stochastik 1 course during your bachelor 2) attend e.g. Stochastics 2 and count it as your Stochastik 1 grade in the master program.
No, it is not possible to recognize courses in the bachelor and in the master.
This has to be done with Mrs. Kaboub (firstname.lastname@example.org). You can do that by sending her the examination recognition form.
If the course is not taken from the study regulation list of courses or should be credited in the ÜWP, you first have to certify it as equivalent to a course from the study regulation. This has to be sent to the intructor of the equivalent course.
For the Überfachlicher Wahlbereich (ÜWP), there exists a module that can be used to credit courses from other universities, e.g. a Chinese culture class in Hong Kong. This can be done for all ECTS in the ÜWP. It has to be approved the examination committee.
If you want to recognise courses as equivalent to courses in the Statstics Master program you need to contact the person responsible for the corresponding equivalent course. This person needs to certify the equivalence. This should be done before taking the course.
There is not yet a Data Science track. There is no further information available.
In the ÜWP all modules can be recognised that are identified as ÜWP and are in module catalogues of other programs of HU or institutions that participate in the Statistics Masters program. Also, other external courses, such as language courses taken abroad, can often be recognised. You then need to provide proof of how many ECTS were achieved.