Typo correction
Typo correction

On slide 18/55 I found a little typo.
HertieDataScience/SyllabusAndLectures,bctclc/SyllabusAndLectures,artpaes/SyllabusAndLectures,HertieDataScience2014/SyllabusAndLectures,gtarriba/SyllabusAndLectures