Practical Data Cleaning, Visualization, Model Fitting, and Backtest Review
I provide practical data analysis services for small businesses, researchers, website owners, financial data projects, and public-data research.
My work goes beyond basic charts and summaries. I focus on whether the data, model, and conclusion are clean, reliable, reproducible, and decision-ready.
Services include:
Excel / CSV data cleaning
Data visualization reports
Stock / ETF historical data analysis
Website traffic and affiliate data analysis
Trading backtest review
Model fitting and residual analysis
Data analysis model audit
include：
Excel data cleaning dashboard
CSV data validation
data quality audit
business data dashboard
survey data analysis
Excel report automation
include：
stock market data validation
VWAP validation
intraday data QA
Python financial time series
backtesting review
ETF historical data analysis
market data API validation