Data Types and Data Sources

In this lesson, we will learn data types and data sources. We will understand structured, semi-structured, and unstructured data, numerical and categorical variables, internal and external data sources, and how data source selection affects analysis. ## Lesson objective In this lesson, we will learn Data Types and Data Sources. In the previous lesson, we covered the Data Analytics Process. We learned business problem, business question, stakeholder, scope, data collection, data cleaning, analysis, visualization, insight, recommendation, and action stages.