Yes, you can, but please consider the following:

•  If you are currently enrolled in a similar Master’s program, you must
  apply for higher study semesters (höhere Fachsemester) and not for the
  first semester
• You cannot pursue two similar Master’s degree programs simultaneously.
• Credits from your other Master’s program can be transferred up to a
  maximum of 30 ECTS.

If you are interested in switching from your current Master’s program to
the Master’s in Statistics, or if you intend to study both programs
concurrently, please contact us before submitting your application.