Film · 2009 · Films · 2000s
Friday the 13th
Scored from 636 calibrated IMDb reviewers, each re-centered on their own rating baseline before the title is ranked. Cohort: Films · 2000s (7,847 peers).
Summary
A group of teenagers arrive at Camp Crystal Lake for a getaway, unaware that the campground is haunted by the legacy of Jason Voorhees, a masked serial killer. As they settle in, they become the targets of a relentless murderer who stalks and hunts them one by one.
Friday the 13th (2009) is a film IMDb files under the horror, thriller and slasher genres. It runs 1h 37m. It was made in the United States. It stars Jared Padalecki, Danielle Panabaker and Amanda Righetti. It was directed by Marcus Nispel. It is rated R.
636 IMDb reviewers rate with enough spread for a personal baseline to be measured, and those are the ones the calibrated score reads; a separate, broader pool of 647 reviewers with at least two reviews each feeds the raw-average track. Its in-cohort standing is measured against the other 7,846 2000s films, not against the whole corpus.
How the score was built
We compare the reviewers of this title against every other title those same people reviewed. Each review is scored relative to the reviewer's own baseline — a 7/10 from a hard grader sits well above their average, while a 7/10 from a generous grader sits below theirs. Every reviewer then counts the same, so the result is a calibrated consensus rather than a raw average.
- Global percentile
- Where Friday the 13th lands against every title we rank.
- In-cohort percentile
- The same comparison narrowed to its cohort — titles of the same format released in the same decade. A 1970s film is judged against 1970s films, not against last year's streaming series. Ranked against Films · 2000s (7,847 titles).
- AI-adjusted percentile
- The same reviewer-normalized score, corrected for how much confidence the sample supports: thin samples are pulled toward the corpus average. Each title keeps the share n / (n + 53) of its measured distance from the average, where n is its calibrated-reviewer count, and the result is ranked on the same scale as the global percentile.53 is the median sample size across everything we rank. Here n is 636.
Cohort: Films · 2000s
