From a technical perspective, a very large portion of your time is spent trying to gather clean data. It's not a pretty world out there, and that's one of main things data science courses gloss over. Data bases are often poorly implemented, and may have a lot of errors. Your models are only as good as the data you're feeding into them, so this becomes a critical chokepoint that can make or break your project.
How data scientists differentiate after a few years of experience You can deploy to production and scale. Building a prototype that gets high accuracy is a wholly different skill set from being able to productionize something and make it resilient enough for users to depend on as part of their workflow day after day.
Most essential skills
Top DS myths
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Or anything in between!