DA0-002 Data Analysis Practice Question
A data analyst is examining sales data for a retail chain and notices that the mean monthly sales is $50,000 while the median is $35,000. Which of the following best describes the distribution of the sales data?
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
✓
The distribution is right-skewed.
When the mean is greater than the median, the distribution is right-skewed (positively skewed) because the mean is pulled towards the higher values by outliers or a long right tail.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The distribution is right-skewed.
Why this is correct
Correct: mean > median indicates right skew.
- ✗
The distribution is bimodal.
Why it's wrong here
Bimodal distribution has two peaks; skewness is not determined by mean vs median alone.
- ✗
The distribution is left-skewed.
Why it's wrong here
In left-skewed distributions, mean is less than median.
- ✗
The distribution is symmetrical.
Why it's wrong here
In a symmetrical distribution, mean and median are approximately equal.
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