DA0-002 Data Acquisition and Preparation Practice Question
Which SQL aggregate function would an analyst use to calculate the average value of a numeric column?
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
✓
AVG
AVG calculates the arithmetic mean of a numeric column.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
SUM
Why it's wrong here
SUM adds values.
- ✓
AVG
Why this is correct
AVG computes the average.
- ✗
COUNT
Why it's wrong here
COUNT returns the number of rows.
- ✗
MEDIAN
Why it's wrong here
MEDIAN is not a standard SQL aggregate function in many databases.
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