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Electronics & Phones

EcoSurvivor Bluetooth Speaker, Built in Battery Backup, 34425

Electronics & Phones4.4· 403 Amazon ratings

Bias-adjusted across 403 Amazon ratings, Bayesian-shrunk to the category prior so the headline score reflects relative quality — not a raw star average. Cohort: Electronics & Phones.

68.4%
Percentile · Global
78.8%
Percentile · Cohort
Electronics & Phones
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EcoSurvivor Bluetooth Speaker, Built in Battery Backup, 34425

How the score was built

Amazon ratings
403

used for the Bayesian percentile

Raw star average
4.4 / 5

unadjusted Amazon mean

Bayesian avg
4.38

raw rating shrunk to the category prior

Reviewer-graph z
0.756

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

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Same category · Electronics & Phones

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