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Where is the dataset to practice?
i think the biggest challenge is validating the results, one mistake and you are in serious trouble.
![What is Tableau Prep | Tableau Prep Hands on Training | Complete Tutorial [ Basic to Advanced]](http://i.ytimg.com/vi/sVf5O6-zNEY/mqdefault.jpg)
Where is the dataset to practice?
i think the biggest challenge is validating the results, one mistake and you are in serious trouble.