1991
global pct
18.0
Film · 1991 · Films · 1990s
Prom Night IV: Deliver Us from Evil
Two parallel scores from 32 z-qualifying reviewers and 32 raw-average reviewers. Cohort: Films · 1990s (4,082 peers).
18.0%
Z · Global
16.5%
Z · Cohort
Films · 1990s
27.4%
Raw · Global
19.4%
Raw · Cohort
Films · 1990s
Two scores · one item
Z-normalized · global
18.0Z-normalized · cohortFilms · 1990s
16.5Raw average · global
27.4Raw average · cohortFilms · 1990s
19.4Z-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 title sits
Z-normalized percentile · 4,082 peers in Films · 1990s
| Mean reviewer z-score | -0.440 |
|---|---|
| DB1 raw-mean rating | 5.78 /10 |
| DB2 raw-mean rating | 5.78 /10 |
| 90% CI-floor (z) | -0.731 |
| Reviewers (DB1 / DB2) | 32 / 32 |
Summary
Plot summary pending — enrichment is running across all 52,376 titles in the catalog.
Pipeline applied to this title
The math, in this order
01
Z-score per reviewer
32 stddev>0 reviewers re-centered onto personal z-scale.
02
Aggregate
Mean z = -0.440. DB2 raw mean = 5.78.
03
CI-floor
90% CI-floor = -0.731. Thin samples penalized.
04
ECDF percentile
Global 18 / cohort 16.5. Z-track and raw-track ranked separately.
Cohort: Films · 1990s
