Since the required modules are based on one another, completing the minor program takes four semesters. It is recommended to start the minor program in the 3rd semester of studies.
No, but it is strongly recommended. The hand in of exercises with testat is often required. See also here for more detailed answers.
A broad approach to probability and statistics, in depth theory, methodology, use of statistical programming language R and further applications.
No, it is not possible.
It is up to the university offering the major study program if it approves the minor.