Calculate the 'true' rating score using the Wilson Score Interval.
Ratings
True Score
Simple Avg
96.2%
True Score
87.0%
Wilson Lower Bound
Total Votes52
5-Star Equiv.4.35/ 5.0
If you have two items with 100% positive ratings, the one with more votes will have a higher True Score.
Overview
A simple average can be misleading for items with few ratings (e.g., one 5-star review vs. one hundred 4.8-star reviews). The Wilson Score Interval calculates a conservative estimate of the 'true' positive rate.
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Pro Tips
Use this to rank items fairly when sample sizes vary.
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Fun Facts
"Reddit and other major platforms use variations of this algorithm to sort 'Best' comments."
"It balances the proportion of positive ratings with the uncertainty of a small sample size."
