C2090-930 · Question #4
Which task is part of the Data Understanding stage of the CRISP-DM process model?
The correct answer is C. Clean data. There appears to be an error in the provided answer key. Based on standard CRISP-DM documentation, A. Explore data is the correct answer, not C. CRISP-DM Data Understanding tasks include: Collect initial data Describe data Explore data - profiling, visualizing distributions…
Question
Which task is part of the Data Understanding stage of the CRISP-DM process model?
Options
- AExplore data
- BBalance data
- CClean data
- DConstruct data
How the community answered
(24 responses)- A8% (2)
- B4% (1)
- C88% (21)
Explanation
There appears to be an error in the provided answer key. Based on standard CRISP-DM documentation, A. Explore data is the correct answer, not C.
CRISP-DM Data Understanding tasks include:
- Collect initial data
- Describe data
- Explore data - profiling, visualizing distributions, spotting patterns
- Verify data quality
Why the distractors (including C) are actually in Data Preparation, not Data Understanding:
| Option | Correct Stage |
|---|---|
| B. Balance data | Data Preparation (a construction/sampling task) |
| C. Clean data | Data Preparation - fix missing values, remove duplicates, correct errors |
| D. Construct data | Data Preparation - derive new features, aggregate records |
Memory tip: Think of the stages as understand first, then prepare. You explore to understand what you have; you clean and construct only once you know what needs fixing. The "Understanding" stage is read-only investigation - no data is modified yet.
If this question came from a course or exam bank, it likely contains a typo or keying error. Double-check against your course materials, as the widely accepted answer (per the official CRISP-DM reference model) is A. Explore data.
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