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Tools & Home Improvement

Aprilaire Genuine OEM Drain Spud No. 4223 for Models: 500 & 600 by Aprilaire

Tools & Home Improvement4.6· 85 Amazon ratings

Bias-adjusted across 85 Amazon ratings, Bayesian-shrunk to the category prior so the headline score reflects relative quality — not a raw star average. Cohort: Tools & Home Improvement.

77.4%
Percentile · Global
71.2%
Percentile · Cohort
Tools & Home Improvement
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Aprilaire Genuine OEM Drain Spud No. 4223 for Models: 500 & 600 by Aprilaire

How the score was built

Amazon ratings
85

used for the Bayesian percentile

Raw star average
4.6 / 5

unadjusted Amazon mean

Bayesian avg
4.43

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 · Tools & Home Improvement

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