This post title is inspired by the title of a movie, witch hunt, I did not see, but I do like the sound of the title. I decided to change the dataset I am exploring for the data management and visualization course (if you need an introduction check this previous post). I decided to change dataset because it is not interesting to do the assignments with an already clean dataset. In fact, this week assignment requires pure data management, which is 1) identification and removal of missing values 2) computation of new variables etc. Since my dataset is already clean and only has three variables, I have nothing to do for the assignment. In the previous assignment I already came up with a new variable, and I was not capable to invent something new. But then I got a fantastic idea.