This week's topic: 

The attendance for the second (and the others) seminar is obligatory. The topics covered in this seminar will be:

• Cleaning of the data.
• Fixing issues with Your dataset.
  
• Elementary descriptive statistics.
  

Tasks:

Data:

Solution:

The script for today's seminar (the semi-finished solution You can use as a starting point for Your solution):

The solutions are going to be available on Friday of the corresponding week.