I will clean, organize and merge your excel or CSV

I specialize in cleaning and structuring messy datasets fixing inconsistent formats, handling missing values, removing duplicates, standardizing variable names and categories, and merging data from multiple sources into analysis-ready files. I work primarily in R and Python (pandas, dplyr) and have hands-on experience with real-world messy data: government survey microdata (encoding issues, mixed separators, inconsistent codebooks), electoral/administrative datasets, and large CSV files with hundreds of thousands of rows. I deliver clean, well-documented datasets ready for analysis, along with a clear record of the transformations applied so you always know exactly what changed and why.