What Data Science Is and Why It Matters

This lesson defines data science as a practical discipline for turning data into decisions, products, and measurable outcomes. It explains how data science differs from related fields such as statistics, data analysis, machine learning, and business intelligence, and shows why organizations use it to solve problems, reduce uncertainty, and discover patterns at scale.

You will also see the core workflow at a high level: framing a question, gathering and preparing data, analyzing and modeling, communicating results, and using findings to take action. By the end of the lesson, you should understand what data science does, where it adds value, and what kinds of problems it is best suited to solve.