unclean data
Data Quality: The Good, The Bad, and The Ugly - KDnuggets
Band-aid solutions do not deal with the cause of the problem. Creating data visualisations to make the data look pretty or applying a decision tree to unclean data, is just a waste of your time. You can create all the models in the world, but it's no use if you present your findings and there are errors popping up one by one. What if your findings were taken as gospel, and the company makes important decisions based on these? None of us want to be in that uncomfortable position.