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MethodologyAbout

Sports & Outdoors

Roller Derby Roller Star Girl's Quad Skate

Sports & Outdoors4.7· 4,297 Amazon ratings

Bias-adjusted across 4,297 Amazon ratings, Bayesian-shrunk to the category prior so the headline score reflects relative quality — not a raw star average. Cohort: Sports & Outdoors.

97.1%
Percentile · Global
96.9%
Percentile · Cohort
Sports & Outdoors
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Roller Derby Roller Star Girl's Quad Skate

How the score was built

Amazon ratings
4,297

used for the Bayesian percentile

Raw star average
4.7 / 5

unadjusted Amazon mean

Bayesian avg
4.69

raw rating shrunk to the category prior

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Same category · Sports & Outdoors

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