B
Evidence Grade B
Graded
under review
Safe to Cite
Recent
80%
80% -- misinterpretation rate for practitioners reading frequentist A/B test results (2025)
Attribution:
View source
Lighthouse Research Team
Last verified:
·
How we verify data →
Source verified
Evidence graded
Value
80%
Unit
Percentage
Data Vintage
2025
Entity
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
CXL
Primary
Tier B
https://kirro.io/bayesian-ab-testing ↗
Source Article
Bayesian A/B Testing: When It Helps, When It Is Overkill
Bayesian A/B testing measures which version of a page works better using a probability that updates as data comes in. Instead of waiting for some magic number of visitors, you get a running answer: “Version B has an 89% chance of getting more signups.”
That’s it. No statistics degree required.
Peopl…
Original Research
CXL
· Original study ↗
Methodology
CXL research, cited by Kirro
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
practitioners reading frequentist A/B test results: 80% misinterpretation rate. Source: CXL (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/misread-pvalues-as-probabilities-80
HTML Embed
<blockquote cite="https://lighthousedata.io/data/misread-pvalues-as-probabilities-80" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>80%</strong> -- misinterpretation rate for practitioners reading frequentist A/B test results<br><small>Source: CXL (2025) · <a href="https://lighthousedata.io/data/misread-pvalues-as-probabilities-80" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
Share
Use this data in your work
Copy the citation, embed the widget, or explore thousands more verified marketing statistics -- all free.