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Volcano (1997) poster
1997
global pct
18.4

Film · 1997 · Films · 1990s

Volcano

Two parallel scores from 197 z-qualifying reviewers and 199 raw-average reviewers. Cohort: Films · 1990s (4,082 peers).

18.4%
Z · Global
16.8%
Z · Cohort
Films · 1990s
17.8%
Raw · Global
11.7%
Raw · Cohort
Films · 1990s
Two scores · one item
Z-normalized · global
18.4
Z-normalized · cohortFilms · 1990s
16.8
Raw average · global
17.8
Raw average · cohortFilms · 1990s
11.7

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 · 4,082 peers in Films · 1990s

Mean reviewer z-score-0.433
DB1 raw-mean rating5.22 /10
DB2 raw-mean rating5.26 /10
90% CI-floor (z)-0.551
Reviewers (DB1 / DB2)197 / 199

Summary

When a volcano unexpectedly erupts beneath Los Angeles, emergency manager Mike Roark teams up with a geologist to save the city from rivers of lava surging through the streets. As molten rock threatens to engulf the MacArthur Park area and beyond, Roark must coordinate a desperate effort to divert the flow and evacuate residents while protecting his teenage daughter.

Pipeline applied to this title

The math, in this order

01
Z-score per reviewer

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

02
Aggregate

Mean z = -0.433. DB2 raw mean = 5.26.

03
CI-floor

90% CI-floor = -0.551. Thin samples penalized.

04
ECDF percentile

Global 18.4 / cohort 16.8. Z-track and raw-track ranked separately.

Cohort: Films · 1990s

Closest peers in the same cohort

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