DAX Aggregation Functions in Power BI for Beginners

Mastering aggregation functions is the foundational skill required to build reliable calculations and dynamic reports in Power BI. This text-based course guides you step by step through creating essential data summaries using Data Analysis Expressions (DAX). You will begin by understanding core DAX terminology, calculation types, and the differences between calculated columns and measures. From there, you will explore both basic aggregation functions and iterative expressions, gaining clarity on how context influences your calculations. What you'll learn: - Understand foundational DAX syntax, data types, and evaluation rules - Apply basic aggregation functions like SUM, AVERAGE, MIN, MAX, and COUNT to summarize data - Master iterator functions such as SUMX and AVERAGEX to perform row-level calculations - Differentiate between row context and filter context to avoid common calculation errors - Combine conditional logic with aggregations for dynamic business metrics - Practice structuring clean, maintainable DAX code following modern reporting conventions The course starts with core concepts before guiding you through structured written examples and practical formula breakdowns. It is designed for beginners who want to build confidence in data analysis without needing prior formula writing experience. Start reading today to take command of your Power BI measures.