DA0-002 Visualization and Reporting Practice Question
In Tableau, an analyst wants to create a calculated field that returns the average sales per customer only for customers who have made more than five purchases. Which Tableau function or approach would be most efficient?
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
✓
Use a Level of Detail expression to count purchases per customer, then filter
Level of Detail (LOD) expressions like { FIXED [Customer ID] : SUM(…) } allow computations at a granular level. Then using an IF condition on the LOD result filters to customers with >5 purchases.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use a table calculation for running sum
Why it's wrong here
Table calculations operate on aggregated data, not pre-aggregation counts.
- ✗
Use a context filter on the number of records
Why it's wrong here
Context filters affect the order of operations but don't compute per-customer counts.
- ✓
Use a Level of Detail expression to count purchases per customer, then filter
Why this is correct
Correct. LOD expressions can compute per-customer counts and then be used in a filter.
- ✗
Create a parameter to filter customers
Why it's wrong here
Parameters are for user input, not for dynamic grouping based on counts.
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