B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
70%
70% -- task completion rate usability problem threshold for product usability testing (2026)
A task completion rate below 70% in product usability testing is generally a signal of serious usability problems.
Attribution:
View source
Lighthouse Research Team
Last verified:
·
How we verify data →
Source verified
Evidence graded
Value
70%
Unit
Percentage
Data Vintage
2026
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
AnnounceKit
Primary
Tier B
https://announcekit.app/blog/user-experience-testing-how-why/ ↗
Source Article
User Experience Testing: How & Why · AnnounceKit
Original Research
AnnounceKit
· Original study ↗
Methodology
General industry benchmark cited in AnnounceKit UX testing guide
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
product usability testing: 70% task completion rate usability problem threshold. Source: AnnounceKit (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/task-completion-rate-70-threshold
HTML Embed
<blockquote cite="https://lighthousedata.io/data/task-completion-rate-70-threshold" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>70%</strong> -- task completion rate usability problem threshold for product usability testing<br><small>Source: AnnounceKit (2026) · <a href="https://lighthousedata.io/data/task-completion-rate-70-threshold" 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.