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MethodologyAbout

Sports & Outdoors

YuanDian Dinosaur Water Bottle, Light Up Boy Drinking Cups with 3D Dinosaur Night Light- 14 OZ Tritan BPA Free Eco-Friendly - Cool Jurassic Merchandise Gift for School Kids Boy Girl

Sports & Outdoors4.2· 278 Amazon ratings

Bias-adjusted across 278 Amazon ratings, Bayesian-shrunk to the category prior so the headline score reflects relative quality — not a raw star average. Cohort: Sports & Outdoors.

25.3%
Percentile · Global
17.4%
Percentile · Cohort
Sports & Outdoors
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YuanDian Dinosaur Water Bottle, Light Up Boy Drinking Cups with 3D Dinosaur Night Light- 14 OZ Tritan BPA Free Eco-Friendly - Cool Jurassic Merchandise Gift for School Kids Boy Girl

How the score was built

Amazon ratings
278

used for the Bayesian percentile

Raw star average
4.2 / 5

unadjusted Amazon mean

Bayesian avg
4.22

raw rating shrunk to the category prior

Reviewer-graph z
0.789

bias-corrected vs. each reviewer's baseline (1 qualifying)

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Same category · Sports & Outdoors

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