THE RESULT
What the data shows
The largest computed metric is 56.45 for (0.0, 0.3]; the smallest is 12.84 for (0.8, inf]. Metric: median_strength (MPa).
Binder definition is explicit; strength differences also reflect age and other mix variables.
| ratio band | samples | median strength | mean strength |
|---|---|---|---|
| (0.0, 0.3] | 118 | 56.45 | 55.11 |
| (0.3, 0.4] | 218 | 44.61 | 45.53 |
| (0.4, 0.5] | 291 | 34.24 | 34.18 |
| (0.5, 0.6] | 275 | 29.45 | 29.25 |
| (0.6, 0.8] | 117 | 19.69 | 19.71 |
| (0.8, inf] | 11 | 12.84 | 15.22 |
THE METHOD
From source to answer
Binder defined as cement plus slag plus fly ash, with fixed ratio bands.
The Python source exposes this study’s transformations. The complete project download includes shared preparation and evaluation routines.
THE NEXT DECISION
What follows from the finding
Compare like-for-like curing conditions before drawing formulation conclusions.
Where the conclusion stops
Laboratory observations do not certify a construction mix. Composition and curing conditions are confounded. Models require independent engineering validation and cannot replace strength testing.
Related studies may reuse observations or holdouts. These are historical analyses; associations and backtests do not demonstrate commercial impact. Further model tuning needs new, untouched evaluation data.