Film · 2017 · Films · 2010s
47 Meters Down
Scored from 402 calibrated IMDb reviewers, each re-centered on their own rating baseline before the title is ranked. Cohort: Films · 2010s (13,059 peers).
Summary
Two American sisters vacationing in Mexico go cage diving to see great white sharks, but the winch cable snaps and their cage plummets to the ocean floor, 47 meters down. Trapped with dwindling air, circling predators, and the threat of nitrogen narcosis, they must find a way back to the surface before their tanks run dry.
47 Meters Down is a 2017 horror, mystery and thriller film.
The cohort it is ranked inside is 2010s films — 13,059 of them. 402 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 418 reviewers with at least two reviews each feeds the raw-average track. A second review pool sits behind it as well: 514 Rotten Tomatoes reviewers clear the same calibration test, and Rankquant scores them separately.
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 47 Meters Down 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 · 2010s (13,059 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 402.
Cohort: Films · 2010s
