Book
The Gilded Age: A Captivating Guide to an Era in American History That Overlaps the Reconstruction Era and Coincides with Parts of the Victorian Era in Britain along with the Belle Époque in France
Two parallel scores from 3 calibrated reviewers and 4 raw-average reviewers.
Z-normalized corrects for reviewer bias (every reviewer re-centered onto their personal scale). Raw average uses simple mean across the broader pool including stddev=0 reviewers.
Where this book sits
Z-normalized percentile · 5,285 ranked books
| Mean reviewer z-score | -0.476 |
|---|---|
| Calibrated raw-mean rating | 4.33 /5 |
| Broad raw-mean rating | 4.25 /5 |
| 90% CI-floor (z) | -1.426 |
| Reviewers (calibrated / broad) | 3 / 4 |
Summary
The Gilded Age: A Captivating Guide to an Era in American History That Overlaps the Reconstruction Era and Coincides with Parts of the Victorian Era in Britain along with the Belle Époque in France sits at the 16th z-normalized percentile across 5,285ranked books. The z-percentile differs from a raw star average because Rankquant subtracts each reviewer's personal baseline before aggregating — so a reader who rates everything 5 stars carries less weight than one who rates discerningly. Raw-average percentile is 12; the gap between the two measures how much bias-correction changes this title's standing. How percentiles are computed.
Pipeline applied to this title
The math, in this order
3 reviewers with rating variance re-centered onto a personal z-scale.
Mean z = -0.476. Broad raw mean = 4.25/5.
90% CI-floor = -1.426. Thin samples penalized.
Global 15.5. Z-track and raw-track ranked separately.
Similar percentile
