By following a series of tactics as you apply EDA, you’re able to build predictive models you can trust. Along the way, you begin to understand your data in the context of the problem you’re trying solve. You also improve the predictive capacity of your models and generate insights that strengthen your business. When your EDA is done well, there are no surprises.
Understanding polling and election modeling: How the behind data science and models that were seemingly off-target in 2016 are different in 2020.