hardMultiple ChoiceObjective-mapped
PL-900 Practice Question: A Power BI report uses a calculated column that…
A Power BI report uses a calculated column that shows [Sales Amount] * 1.1. Users notice the column shows incorrect values after a data refresh. What is the most likely cause?
⚠ Common exam trap
It's easy for candidates to assume a data type change or refresh mode is the cause, but the question specifically describes a consistent scaling error, which points directly to a formula change rather than structural or data source issues.
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 DAX formula was edited to multiply by 1.2 instead of 1.1
If the DAX formula was edited to multiply by 1.2 instead of 1.1, the calculated column would produce values 9.09% higher than expected after the refresh. This directly explains the discrepancy users observe, as calculated columns are recomputed during data refresh based on the current formula definition.
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 DAX formula was edited to multiply by 1.2 instead of 1.1
Why this is correct
Changing the multiplier would produce different results.
- ✗
The dataset was refreshed in Import mode instead of DirectQuery
Why it's wrong here
Refresh mode does not affect the calculation logic.
- ✗
The data type of 'Sales Amount' changed from decimal to integer
Why it's wrong here
This would cause a type conversion error, not incorrect values.
- ✗
The source column name changed from 'Sales Amount' to 'SalesAmt'
Why it's wrong here
This would break the formula, causing an error, not incorrect values.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PL-900 practice question is part of Courseiva's free Microsoft 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 PL-900 exam.