DA0-002 Data Concepts and Environments Practice Question
A retail analyst needs to determine the most popular product category. The dataset includes columns: ProductID, Category, SalesDate, QuantitySold, UnitPrice. Which column contains qualitative data?
⚠ Common exam trap
The trap here is that candidates often mistake dates (SalesDate) for qualitative data because they are not numeric, but dates are actually quantitative interval data with a meaningful order and equal intervals.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Category
Qualitative data (also called categorical data) represents non-numeric categories or labels. The 'Category' column contains text values such as 'Electronics' or 'Clothing', which are descriptive and cannot be used in arithmetic operations. This makes it the only qualitative column in the dataset.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
SalesDate
Why it's wrong here
Incorrect. SalesDate is a date/time value, typically treated as quantitative or temporal, not qualitative.
- ✗
QuantitySold
Why it's wrong here
Incorrect. QuantitySold is a numeric count, so it is quantitative.
- ✗
UnitPrice
Why it's wrong here
Incorrect. UnitPrice is a numeric monetary value, so it is quantitative.
- ✓
Category
Why this is correct
Correct. Category is a qualitative variable as it describes a product attribute.
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