Film · 2009 · Films · 2000s
Harry Potter and the Half-Blood Prince
Two parallel scores from 803 z-qualifying reviewers and 831 raw-average reviewers. Cohort: Films · 2000s (7,847 peers).
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
Z-normalized percentile · 7,847 peers in Films · 2000s
| Mean reviewer z-score | -0.052 |
|---|---|
| DB1 raw-mean rating | 6.56 /10 |
| DB2 raw-mean rating | 6.56 /10 |
| 90% CI-floor (z) | -0.110 |
| Reviewers (DB1 / DB2) | 803 / 831 |
Summary
Harry returns to Hogwarts for his sixth year, where Dumbledore recruits him to retrieve a vital memory from Professor Slughorn about Horcruxes. As Harry navigates teenage romance and friendship tensions, mysterious events unfold at the school and Draco Malfoy appears to be involved in a sinister plot.
Pipeline applied to this title
The math, in this order
803 stddev>0 reviewers re-centered onto personal z-scale.
Mean z = -0.052. DB2 raw mean = 6.56.
90% CI-floor = -0.110. Thin samples penalized.
Global 45.4 / cohort 50.4. Z-track and raw-track ranked separately.
Cohort: Films · 2000s
