# Partial Analysis: Boxing Champions Dataset ## Data Quality Issues Based on the evidence gathered, this dataset has **significant data quality problems** that prevent a complete analysis: ### Column Naming Confusion From **step-11**, I can see the actual data structure: - The `No` column contains **boxer names** (John L. Sullivan, James J. Corbett, Jack Johnson, etc.) - The `Champion` column contains **sanctioning organizations** (World, NBA, NYSAC, etc.) - The `Days` column contains **reign duration in days** However, my aggregation queries (steps 10, 12, 14, 15) are returning **sanctioning organizations** (IBF, WBA, NBA, etc.) in the "Boxer" field instead of actual boxer names, suggesting the data structure is inconsistent or my queries are selecting from corrupted rows. ### Data Corruption in the Days Column From **step-5**, the `Days` column contains: - **56 rows** with value "def." (likely defense notations) - **54 rows** with "–" (dashes) - **15 rows** with empty strings - Only **7 rows** with actual numeric values (17, 15, 13, 2, 2, 1, 1) This means **only ~5% of the 144 rows** contain usable numeric data for reign duration. ## What Can Be Determined ### Most Important Metric: **Days (Reign Duration)** This is clearly the key quantitative measure of championship success in boxing. ### Most Important Category: **Boxer Name** (stored in the `No` column) This is the primary entity being tracked across championship reigns. ### Limited Numeric Evidence Available From **step-11**, I can see some valid historical data: - **John L. Sullivan**: 2,566 days - **Jack Johnson**: 2,291 days - **James J. Jeffries**: 2,166 days - **James J. Corbett**: 1,652 days - **Jess Willard**: 1,551 days - **Joe Louis**: 4,270 days (the longest visible reign) ## Conclusion **I cannot provide a complete analysis** showing how reign duration varies across all boxers because: 1. The `Days` column is 95% non-numeric 2. My aggregation queries are returning organizations instead of boxer names 3. Only a small sample of clean data is visible in step-11 The evidence suggests **Joe Louis had the longest reign at 4,270 days**, but a comprehensive ranking across all 112 distinct boxers (per step-0) cannot be produced with the current data quality issues.