DA0-002 Data Analysis Practice Question
A data analyst calculates the mean, median, and mode of a sales dataset and finds they are all equal. Which type of distribution does this indicate?
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
✓
Normal distribution
When mean, median, and mode are equal, the distribution is symmetric and typically bell-shaped (normal).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Normal distribution
Why this is correct
Normal distribution has equal mean, median, and mode.
- ✗
Skewed right
Why it's wrong here
In right skew, mean is greater than median.
- ✗
Bimodal distribution
Why it's wrong here
Bimodal has two modes, mean may not equal median.
- ✗
Skewed left
Why it's wrong here
In left skew, mean is less than median.
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