Levels of Measurement in Data Analysis: Nominal to Ratio Data
When you and I start analyzing any dataset, it's not enough to know the type of data—we also need t...
Data Analysis
Completely free data analysis courses with Power BI, Excel, and SQL. Courses, tutorials, and simple answers—all in one place.
In this category, I cover the complete data analysis process—from understanding data types and cleaning datasets to visualization, SQL analysis, and real-world analytics projects. The articles are written for beginners and professionals who want practical, job-ready data analysis skills.
Types of Data in Data Analysis: A Beginner-Friendly Guide
When you and I talk about data analysis, the first thing we must understand is the type of data we'...
Types of Data Analysis and When to Use Each One
When you and I talk about data analysis, we're really talking about different methods we use to und...
What Is Data Analysis? A Complete Beginner’s Guide
When you hear the term "data analysis (DA)," you might imagine huge spreadsheets, charts, or comple...