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Sports & Outdoors

Aqua Sphere Sphera Swim Mask

Sports & Outdoors3.4· 142 Amazon ratings

Bias-adjusted across 142 Amazon ratings, Bayesian-shrunk to the category prior so the headline score reflects relative quality — not a raw star average. Cohort: Sports & Outdoors.

4.5%
Percentile · Global
2.7%
Percentile · Cohort
Sports & Outdoors
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Aqua Sphere Sphera Swim Mask

How the score was built

Amazon ratings
142

used for the Bayesian percentile

Raw star average
3.4 / 5

unadjusted Amazon mean

Bayesian avg
3.77

raw rating shrunk to the category prior

Reviewer-graph z
0.707

bias-corrected vs. each reviewer's baseline (0 qualifying)

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Same category · Sports & Outdoors

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