I will clean, deduplicate and standardize your excel or CSV data

Algumas informações são exibidas no idioma inglês.

China

Eu falo Inglês

data analyst

Hi, I'm Fiona, a data analyst with 8 years turning messy data into decisions. Tools: SQL, Python (pandas, scikit-learn, LightGBM), Power BI, Excel, PowerPoint. What I deliver: - Data cleaning: Excel...
Sobre este Serviço

New seller pricing: the first 5 orders are discounted while I build my review history.


Messy Excel or CSV in, clean and analysis-ready data out - usually within 48 hours.


What you get

- Duplicates removed, broken encodings fixed, formats unified

- Dates, currencies, units and category labels standardized so they sort and aggregate correctly

- Missing values handled with a documented approach, not simply deleted rows

- Multiple files or sheets merged and reconciled into one table

- Outliers flagged with reasons, so you decide what to do with them

- A change log covering every transformation, so you can defend the dataset to your team or client


Tools: Python (pandas, NumPy), SQL, Excel


Files I handle: CRM exports, e-commerce order data, survey results, marketing reports, financial records, scraped data.


Why me: 8 years of analysis work, not data entry. Everything is reproducible and documented. If I find something odd - duplicate customers, impossible dates, revenue that does not reconcile - I flag it instead of quietly passing it downstream.


Message me with your file and row count before ordering, and I will confirm scope and turnaround.


Meu portfólio