Frequently Asked Questions
How is average rating calculated?
Weight each star value by its count and divide by the total count. The Bayesian version adds a small prior to soften extreme averages from few ratings.
Why does a few 5-star ratings look like 4.2 stars?
Smoothing. With only 10 ratings, the smoothed estimate stays closer to the global average (often 3.0-3.5).
What's a good rating?
Highly category-dependent. Restaurants often average 4.0+; tech products average 4.2-4.5. Below 3.5 is usually concerning.
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Estimates for informational purposes only.
Important Disclaimer: Estimates for informational purposes only.
This calculator provides estimates for informational purposes only. Results are based on assumptions and may not reflect actual outcomes. Consult qualified professionals in relevant fields before making important decisions based on these results.