11  Graded Assessment and Course Wrap Up


Summary

Concept Description
Hands-On Build
Connection Choice Deciding between Import, DirectQuery, or Live for the scenario
Transformation Plan Sequencing Power Query steps to reach the analysis-ready model
Quality Checks Profiling rows, distributions, and value distributions per column
Error Recovery Handling source errors and bad rows without breaking refresh
Documentation Annotating queries with descriptions for future maintainers
Performance Testing Measuring refresh duration and visual response under load
Assessment
Module Quiz Graded knowledge check covering ETL fundamentals
Course Wrap-Up Recap of how Power BI ETL fits into the broader analyst journey