Match each data type to its example.
Drag a concept onto its matching description — or click a concept then click the description.
Country of origin (e.g., USA, Canada)
Customer satisfaction rating (1-5)
Temperature in Celsius
Annual income in dollars
Gender (Male, Female, Other)
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Nominal: Colors of cars (red, blue, green)
Nominal data are categories without order; ordinal data have ranked categories; interval data have equal intervals but no true zero; ratio data have equal intervals and a true zero. Common confusions include mistaking nominal for ordinal (e.g., gender) or interval for ratio (e.g., counts).
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Nominal: Colors of cars (red, blue, green)
Why this is correct
Nominal data categorizes without order. Colors are categories with no inherent ranking.
Ordinal: Educational levels (high school, bachelor's, master's)
Why this is correct
Ordinal data has a meaningful order but unequal intervals. Educational levels have a clear hierarchy.
Interval: Temperature in Celsius (20°C, 25°C)
Why this is correct
Interval data has equal intervals but no true zero. Celsius has equal degree increments but 0°C does not mean absence of temperature.
Ratio: Height in centimeters (150 cm, 175 cm)
Why this is correct
Ratio data has equal intervals and a true zero. Height in cm has a meaningful zero point (no height).
Ordinal: Gender (male, female)
Why it's wrong here
Incorrect — gender is nominal, not ordinal, because it has no inherent order.
Interval: Number of siblings (0,1,2,3)
Why it's wrong here
Incorrect — number of siblings is ratio because it has a true zero (no siblings).
Go deeper
About these practice questions
Courseiva writes every DA0-002 question from scratch — 986 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DA0-002 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DA0-002 exam.