I will statistical analysis and data cleaning

1. Requirement Confirmation (Free for all tiers)

I will confirm your data structure, statistical methods and visualization needs, and deliver a clear, actionable work plan before project start.

2. Data Cleaning & Preprocessing (All tiers)

Professional data sorting, error correction, deduplication and missing value handling. Basic: single dataset cleaning. Standard: complete data preprocessing. Premium: multi-dataset cleaning and integration.

3. Statistical Coding & Execution (Standard / Premium)

Based on your independent research design, I run descriptive statistics, correlation and regression analysis via Python and Stata, providing only objective technical results for your reference.

4. Visualization & Code Delivery (All tiers)

Create journal-standard charts and deliver fully commented, runnable and reproducible code. Basic: 1 publication-ready chart. Standard: 3 optimized charts. Premium: 5+ customized high-quality academic figures.

5. Revision & Final Delivery (All tiers)

Tier-based revision and full final delivery. Basic: 1 revision. Standard: 2 revisions. Premium: reasonable unlimited revisions with fully optimized deliverables.