Of all the steps in Analytics, data cleaning & preparation plays a very crucial for the success of the entire exercise. In fact, if not done well, it can sabotage the whole objective. Through this video (https://youtu.be/dxTesoAbb10) and practice file you get here, you will get hands-on practice on a routine used to clean & prepare data. For convenience, we will work with a complex data set by reasonably small in size.
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