Excel Formula Correction for Accurate Analysis

I am working on an Excel sheet that performs operations for structuring and analyzing data. However, it's not providing accurate results which is hindering my data analysis.

Key Requirements:
- Revise existing formulas to correct data return issues.
- Make the sheet versatile enough to accurately analyze different sets of data that I will input.

Skillset:
- Proficiency in Excel and its data analysis functionalities
- Strong understanding of data structure
- Ability to debug and correct Excel formulas