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Toys, Games & Music

Tumble-Bee Rock Tumbler - Large Tumbler for Adults and Kids - Rotary Machine for Stone, Rock, Metal and Sea Glass - Polishing Machine Kit for Professionals & Hobbyists - Model TB-14-KIT

Toys, Games & Music4.3· 7,348 Amazon ratings

Bias-adjusted across 7,348 Amazon ratings, Bayesian-shrunk to the category prior so the headline score reflects relative quality — not a raw star average. Cohort: Toys, Games & Music.

48.3%
Percentile · Global
37.9%
Percentile · Cohort
Toys, Games & Music
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Tumble-Bee Rock Tumbler - Large Tumbler for Adults and Kids - Rotary Machine for Stone, Rock, Metal and Sea Glass - Polishing Machine Kit for Professionals & Hobbyists - Model TB-14-KIT

How the score was built

Amazon ratings
7,348

used for the Bayesian percentile

Raw star average
4.3 / 5

unadjusted Amazon mean

Bayesian avg
4.30

raw rating shrunk to the category prior

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Same category · Toys, Games & Music

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