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Electronics & Phones

Icstation Recordable Sound Module, Button Control Sound Chip 8M MP3 WAV Music Voice Player Programmable Board with Speaker for DIY Birthday Music Box Mother's Day Greeting Card Present

Electronics & Phones4.0· 177 Amazon ratings

Bias-adjusted across 177 Amazon ratings, Bayesian-shrunk to the category prior so the headline score reflects relative quality — not a raw star average. Cohort: Electronics & Phones.

13.9%
Percentile · Global
10.5%
Percentile · Cohort
Electronics & Phones
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Icstation Recordable Sound Module, Button Control Sound Chip 8M MP3 WAV Music Voice Player Programmable Board with Speaker for DIY Birthday Music Box Mother's Day Greeting Card Present

How the score was built

Amazon ratings
177

used for the Bayesian percentile

Raw star average
4.0 / 5

unadjusted Amazon mean

Bayesian avg
4.11

raw rating shrunk to the category prior

Reviewer-graph z
-1.155

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

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Same category · Electronics & Phones

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