| Lot | Animal | Sale | Type | BFI | MS | MF | EMA | Model Pred. | Actual Price | Variance |
|---|
| Segment | N | BFI Slope | Intercept | R² | MAPE | Within 20% | Notes |
|---|---|---|---|---|---|---|---|
| Young Heifers (W/N, 2025-born) | 29 | $9.25/pt | $584 | 0.351 | 14.1% | 86% | Market floors yearlings regardless of BFI — low WBV accuracy on young animals |
| Proven Heifers (M/K/L/J) | 29 | $39.33/pt | −$9,953 | 0.425 | 28.6% | 48% | Full BFI signal. Sire family matters — Shogun/BailUOut daughters show −$1,800 discount |
| Bulls | 26 | $43.04/pt | −$15,787 | 0.529 | 31.2% | 35% | Highest slope — sire potential + semen inclusion premium above genetics alone |
| Big Texas — elite (out-of-sample) | 47 | — | — | ~0.2 | 50% | 26% | Trophy-donor sale — price is pedigree/demand-driven, not WBV. Top donors ran $40K–$120K on mid-range BFI; bulls anti-correlated (highest BFI sold lowest). Confirms elite needs comps, not a slope. |
| Passion for Prime — prestige (out-of-sample) | 39 | — | — | low | 72% | 18% | Sold SOFT overall — production lots over-predicted by ~2×; donor headliners under-predicted. Recip pregnancies priced flat ~$7K regardless of BFI (480–660 range all sold $6K–$8K). Pedigree-driven outliers: 312L $75K, Black Sky $45K, Inselmann $40K, Lot 88 (M6 Q0540) $410K. Two-regime finding confirmed: BFI predicts below ~$15K (r=0.46); pedigree dominates above it (r=0.20). Lesson: a sale’s price level is not fixed by WBV tier. |
| All Combined | 74 | — | — | — | 29.5% | 62% | Two sales now held out: Big Texas (elite — pedigree-driven, 50%) and Passion for Prime (sold soft — model over-predicted ~2×). The lesson isn't a slope tweak: a sale's price LEVEL varies independent of WBV. v6 adds a flat recip-pregnancy category (~$7K), a lower floor, and routes donor headliners to comps. |