Aptitude & Skills
error-checking
Error checking
Compare two sets of data and spot the differences under time pressure.
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A short 10-question sample of the real format. You can retake it any time.
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Preview test
· 10 questions
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Full-length practice tests
Same length and pacing as the real test. Unlock all with premium.
- 🔒 New questions Same format, different questions · 10 questions Unlock →
- 🔒 Extra round Another set to sharpen your pattern recognition · 10 questions Unlock →
- 🔒 Refresher Consolidate what you have practised · 10 questions Unlock →
Show 20 more practice tests ↓ Show less ↑
- 🔒 Full run Build pace across a whole set · 10 questions Unlock →
- 🔒 Final rehearsal One last round before the real thing · 10 questions Unlock →
- 🔒 New questions Same format, different questions · 10 questions Unlock →
- 🔒 Extra round Another set to sharpen your pattern recognition · 10 questions Unlock →
- 🔒 Refresher Consolidate what you have practised · 10 questions Unlock →
- 🔒 Full run Build pace across a whole set · 10 questions Unlock →
- 🔒 Final rehearsal One last round before the real thing · 10 questions Unlock →
- 🔒 New questions Same format, different questions · 10 questions Unlock →
- 🔒 Extra round Another set to sharpen your pattern recognition · 10 questions Unlock →
- 🔒 Refresher Consolidate what you have practised · 10 questions Unlock →
- 🔒 Full run Build pace across a whole set · 10 questions Unlock →
- 🔒 Final rehearsal One last round before the real thing · 10 questions Unlock →
- 🔒 New questions Same format, different questions · 10 questions Unlock →
- 🔒 Extra round Another set to sharpen your pattern recognition · 10 questions Unlock →
- 🔒 Refresher Consolidate what you have practised · 10 questions Unlock →
- 🔒 Full run Build pace across a whole set · 10 questions Unlock →
- 🔒 Warm-up A gentler entry level · 4 questions Unlock →
- 🔒 Warm-up 2 A gentler entry level · 4 questions Unlock →
- 🔒 Challenge set Harder questions for advanced practice · 4 questions Unlock →
- 🔒 Challenge set 2 Harder questions for advanced practice · 4 questions Unlock →
What to expect
- 10 questions per practice set, with explanations
- Codes, names and numbers side by side
- Both speed and accuracy count
Tips to score higher
- Compare character by character, not at a glance
- Work in a fixed direction: left to right
- Look-alike digits and letters are the classic trap
This practice package will help you prepare for the data/error checking section of your aptitide test. All exercises are based on the questions that are used in the assessments of the major assessment centres.