Python Script for Numerical Data Analysis

I'm looking for an experienced Python developer to create a script focused on processing and analyzing numerical data. The main tasks the script should perform include:

- Data cleaning and preprocessing
- Performing statistical analyses

The ideal freelancer for this project would have a strong background in Python, data science, and statistical analysis. Experience with data preprocessing and cleaning, as well as conducting various forms of statistical analyses on numerical data, is crucial. Ability to write clean, efficient, and well-documented code will be highly appreciated.