DA0-001 Comparing and Contrasting Data Concepts Practice Question
This DA0-001 practice question tests your understanding of comparing and contrasting data concepts. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A data team is building a predictive model. They have data on 'Number of employees' (whole numbers) and 'Revenue' (currency). Which statement correctly compares these data types?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Number of employees is discrete; revenue is continuous
Option A is correct because 'Number of employees' is a count of distinct entities, making it discrete data (only whole numbers), while 'Revenue' can take any value within a range (including decimals), making it continuous data. Discrete data arises from counting, whereas continuous data arises from measurement.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Number of employees is discrete; revenue is continuous
Why this is correct
Employees are counted in whole units (discrete), while revenue can have fractional values (continuous).
Related concept
Read the scenario before looking for a memorised answer.
✗
Both are continuous data
Why it's wrong here
Number of employees is discrete, not continuous.
✗
Both are ratio data
Why it's wrong here
Both can be ratio, but the question is about discrete vs continuous.
✗
Number of employees is qualitative; revenue is quantitative
Why it's wrong here
Both are quantitative (numeric).
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse the measurement scale (ratio) with the data type (discrete vs. continuous), leading them to pick option C even though the question specifically asks about data type classification.
Detailed technical explanation
How to think about this question
Discrete data is countable and often integer-valued, like employee counts, while continuous data is measurable and can take any real number within an interval, like revenue in dollars and cents. In predictive modeling, this distinction affects algorithm choice—e.g., linear regression assumes continuous output, while Poisson regression is suited for count data. A real-world trap: revenue is often treated as continuous but may be rounded to cents, yet mathematically it remains continuous because it can take any value in a range.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the DA0-001 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Comparing and Contrasting Data Concepts — This question tests Comparing and Contrasting Data Concepts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Number of employees is discrete; revenue is continuous — Option A is correct because 'Number of employees' is a count of distinct entities, making it discrete data (only whole numbers), while 'Revenue' can take any value within a range (including decimals), making it continuous data. Discrete data arises from counting, whereas continuous data arises from measurement.
What should I do if I get this DA0-001 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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