White · Toscana · Italia
Fattoria di Petrognano Trebbiano
Scored from 50 calibrated Vivino reviewers, each re-centered on their own rating baseline before the bottle is ranked. Cohort: White · Italia (1,880 wines).
Find this wine: view on Vivino · compare prices on Wine-Searcher
Summary
Fattoria di Petrognano Trebbiano is a white from Toscana, Italy.
The calibrated figure is built from 50 reviewers whose rating history varies enough to place their own average. A broader pool of 50 reviewers with two or more ratings feeds the raw-average track instead. Its in-cohort standing is measured against 1,879 other whites from Italy, not against the corpus as a whole.
How the score was built
We compare the reviewers of this bottle against every other wine those same people reviewed. Each review is scored relative to the reviewer's own baseline — four stars from someone who hands out fives means something very different from four stars from someone who rarely goes above three. Every reviewer then counts the same, so the result is a calibrated consensus rather than a star average.
- Global percentile
- Where Fattoria di Petrognano Trebbiano lands against every wine we rank.
- In-cohort percentile
- The same comparison narrowed to its cohort — wines of the same type from the same country. A Chilean red is judged against Chilean reds, not against Champagne. Ranked against White · Italia (1,880 wines).
- AI-adjusted percentile
- The same reviewer-normalized score, corrected for how much confidence the sample supports: thin samples are pulled toward the corpus average. Each wine keeps the share n / (n + 53) of its measured distance from the average, where n is its calibrated-reviewer count, and the result is ranked on the same scale as the global percentile.53 is the median sample size across everything we rank. Here n is 50.
