[PL-300] 9, Fixing Nulls, Errors, and Data Quality Problems

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How replacing errors with zero versus leaving nulls impacts DAX measures like AVERAGE and DIVIDE - The critical functional difference between Remove Errors and Keep Errors when diagnosing data anomalies - Best practices for using Fill Down and Fill Up to handle parent-child hierarchy gaps - How step order and text trimming affect deduplication and inconsistent label cleanup in Power Query - Strategies for resolving folder import failures and schema changes using robust Power Query error handling For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep