B
Evidence Grade B
Graded
under review
Safe to Cite
Current
55
55 -- product categories with positive star rating sales correlation for top 70 highest-selling product categories (2026)
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
55
Unit
Count
Data Vintage
2026
Entity
Sample Size
70
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
McKinsey & Company
Primary
Tier B
https://biltapp.com/news/a-5-star-experience-do-higher-product-ratings-lead-to-higher-sales/ ↗
Source Article
5-Stars: Do Higher Product Ratings Lead To Higher Sales? - BILT Inc.
5-Stars: Do Higher Product Ratings Lead To Higher Sales?
When it comes to product ratings, research shows a 4 or 5-star rating significantly impacts product sales. One key differentiator is the customer experience. What kind of out-of-the-box experience do you deliver?
With a surge of online shoppin…
Original Research
McKinsey & Company
· Original study ↗
Methodology
McKinsey analysis of reviews from 70 highest-selling product categories
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
top 70 highest-selling product categories: 55 product categories with positive star rating sales correlation. Source: McKinsey & Company (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/star-rating-sales-correlation-categories
HTML Embed
<blockquote cite="https://lighthousedata.io/data/star-rating-sales-correlation-categories" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>55</strong> -- product categories with positive star rating sales correlation for top 70 highest-selling product categories<br><small>Source: McKinsey & Company (2026) · <a href="https://lighthousedata.io/data/star-rating-sales-correlation-categories" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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