This Tableau course focuses on mastering data blending and duplicate management to ensure clean and accurate dashboards. Ideal for analysts working with multiple datasets, it teaches practical techniques to identify, troubleshoot, and resolve common data issues.

You will start with data blending, learning when and how to use blends versus joins, and how to combine multiple datasets efficiently for analysis. Next, the course dives into duplicate detection and handling, covering common problems such as many-to-many relationships, false data, and repeated entries that can distort insights.

Practical demonstrations show how to find duplicates in large datasets, handle zeros and ones for visualizations, and apply tricks to identify duplicate values across multiple columns. The course also includes real-world examples of troubleshooting join-related duplicates, ensuring data integrity.

By the end of this course, learners will be confident in blending multiple data sources, cleaning up duplicates, performing quality checks, and building reliable Tableau dashboards. The techniques provided will save time, reduce errors, and enhance the accuracy of your visual analytics.