Rankquant
MethodologyAbout

Sports & Outdoors

50 Strong Teacher Water Bottle - BPA Free - Christmas Gift for Teachers - Give Bottles As Thank You Gifts & Appreciation for Teachers - Easy Carry Loop - Made in USA (30 oz., 2nd Grade Life)

Sports & Outdoors4.4· 36 Amazon ratings

Bias-adjusted across 36 Amazon ratings, Bayesian-shrunk to the category prior so the headline score reflects relative quality — not a raw star average. Cohort: Sports & Outdoors.

56.5%
Percentile · Global
48.1%
Percentile · Cohort
Sports & Outdoors
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50 Strong Teacher Water Bottle - BPA Free - Christmas Gift for Teachers - Give Bottles As Thank You Gifts & Appreciation for Teachers - Easy Carry Loop - Made in USA (30 oz., 2nd Grade Life)

How the score was built

Amazon ratings
36

used for the Bayesian percentile

Raw star average
4.4 / 5

unadjusted Amazon mean

Bayesian avg
4.32

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 · Sports & Outdoors

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