Besides the benefit of learning by making a portfolio, a portfolio is important as it can help get you employment. For the purpose of this article, let’s define a portfolio as public evidence of your data science skills.
How do you get a job in data science? Knowing enough statistics, machine learning, programming, etc to be able to get a job is difficult. One thing I have found lately is quite a few people may have the required skills to get a job, but no portfolio.