Large-Scale Excel Data Cleaning & Standardization
A data-cleaning project focused on transforming years of unstructured, inconsistent records into a clean, standardized, and analysis-ready dataset.
Problem
The dataset contained duplicates, missing values, inconsistent formats, and unreliable entries that made reporting and analysis impossible.
Approach
Used Power Query and advanced Excel formulas to clean, standardize, and validate data while maintaining data integrity across thousands of records.
Tools Used
- Microsoft Excel
- Power Query
- Data Validation
- Advanced Formulas
Result
Delivered a 100% clean and structured dataset, enabling accurate analysis, confident reporting, and long-term usability.