TV Series · 2006 · TV Series · 2000s
Nana
Scored from 28 calibrated IMDb reviewers, each re-centered on their own rating baseline before the title is ranked. Cohort: TV Series · 2000s (1,360 peers).
Summary
Two girls named Nana meet on a train and become friends while pursuing their dreams in Tokyo, navigating love, music, and personal aspirations together.
Nana (2006) is a television series IMDb files under the animation, comedy and drama genres. Episodes run about 24m. Its country of origin is listed as Japan. It plays in Japanese. Its certificate is TV-14.
Only 28 of its IMDb reviewers rate with enough spread for a personal baseline to be measured, so the calibrated figure rests on a thin sample; a broader pool of 31 reviewers with at least two reviews feeds the raw-average track. 1,359 other television series from the 2000s form the cohort it is ranked inside.
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 Nana 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 TV Series · 2000s (1,360 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 28.
Cohort: TV Series · 2000s
