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Grange Hill (1978) poster
1978
global pct
90.0

TV Series · 1978 · TV Series · 1970s

Grange Hill

Two parallel scores from 10 z-qualifying reviewers and 10 raw-average reviewers. Cohort: TV Series · 1970s (220 peers).

90.0%
Z · Global
62.1%
Z · Cohort
TV Series · 1970s
95.0%
Raw · Global
76.3%
Raw · Cohort
TV Series · 1970s
Two scores · one item
Z-normalized · global
90.0
Z-normalized · cohortTV Series · 1970s
62.1
Raw average · global
95.0
Raw average · cohortTV Series · 1970s
76.3

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 title sits

0255075100

Z-normalized percentile · 220 peers in TV Series · 1970s

Mean reviewer z-score+0.543
DB1 raw-mean rating8.80 /10
DB2 raw-mean rating8.80 /10
90% CI-floor (z)+0.023
Reviewers (DB1 / DB2)10 / 10

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

10 stddev>0 reviewers re-centered onto personal z-scale.

02
Aggregate

Mean z = +0.543. DB2 raw mean = 8.80.

03
CI-floor

90% CI-floor = +0.023. Thin samples penalized.

04
ECDF percentile

Global 90 / cohort 62.1. Z-track and raw-track ranked separately.

Cohort: TV Series · 1970s

Closest peers in the same cohort

See all 52,376