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Automotive

JOYROOM Air Compressor Tire Inflator - Car Tire Pump with Digital Display Pressure Gauge, Bright Emergency Flashlight - 150 PSI 12V DC for Cars, Trucks, Bicycles, Balls (ck3650)

Automotive4.5· 679 Amazon ratings

Bias-adjusted across 679 Amazon ratings, Bayesian-shrunk to the category prior so the headline score reflects relative quality — not a raw star average. Cohort: Automotive.

81.4%
Percentile · Global
85.7%
Percentile · Cohort
Automotive
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JOYROOM Air Compressor Tire Inflator - Car Tire Pump with Digital Display Pressure Gauge, Bright Emergency Flashlight - 150 PSI 12V DC for Cars, Trucks, Bicycles, Balls (ck3650)

How the score was built

Amazon ratings
679

used for the Bayesian percentile

Raw star average
4.5 / 5

unadjusted Amazon mean

Bayesian avg
4.47

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 · Automotive

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