Pet Supplies
Marine Color Speed Adjustable Dosing Pump for Aquarium DIY Suction Cup Mount Black Version
Bias-adjusted across 52 Amazon ratings, Bayesian-shrunk to the category prior so the headline score reflects relative quality — not a raw star average. Cohort: Pet Supplies.
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How the score was built
- Amazon ratings
- 52
- Raw star average
- 3.8 / 5
- Bayesian avg
- 4.12
- Reviewer-graph z
- -0.707
used for the Bayesian percentile
unadjusted Amazon mean
raw rating shrunk to the category prior
bias-corrected vs. each reviewer's baseline (0 qualifying)
Buy it: View on Amazon →
Same category · Pet Supplies
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