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A Power BI development company ensures report accuracy through meticulous data preparation, transformation, and validation. They use Power Query to clean and format data, ensuring consistency across different sources. By implementing robust data modeling techniques, they ensure relationships between datasets are correctly defined. Developers apply DAX (Data Analysis Expressions) to create accurate calculations and measures that align with business logic. Rigorous testing is conducted throughout the development process to identify and correct any discrepancies. Additionally, regular data audits and refreshes ensure that reports stay accurate as new data flows into the system.
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