TV Series · 2020 · TV Series · 2020s
Down to Earth with Zac Efron
Scored from 126 calibrated IMDb reviewers, each re-centered on their own rating baseline before the title is ranked. Cohort: TV Series · 2020s (3,070 peers).
Summary
Actor Zac Efron travels the globe with wellness expert Darin Olien to explore healthy, sustainable ways to live. Each episode visits a different country, examining local food, water, energy, and environmental practices, from geothermal power in Iceland to chocolate production in Peru.
Released in 2020, Down to Earth with Zac Efron is a documentary, history and reality television series.
The calibrated figure is built from 126 reviewers whose rating history varies enough to place their own average. A broader pool of 136 reviewers with two or more reviews feeds the raw-average track instead. The cohort it is ranked inside is 2020s television series — 3,070 of them. Rotten Tomatoes carries a separate audience for the same title, 13 of whom clear the calibration test.
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 Down to Earth with Zac Efron 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 · 2020s (3,070 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 126.
Cohort: TV Series · 2020s
