Excel Statistical Analysis Formula

I need an Excel expert to create a comprehensive formula for data analysis. The primary use is statistical analysis.

Key requirements:
- AVERAGE, VARIANCE, and STANDARD DEVIATION
- COUNT, MEDIAN, and MODE
- CORRELATION, REGRESSION, and ANOVA

Ideal skills and experience:
- Advanced proficiency in Excel
- Strong background in statistics
- Experience with complex Excel formulas and data analysis

Please provide samples of previous work and a brief approach to tackle this task.