In Power BI, removing duplicates and blanks is an essential data cleaning step to ensure data accuracy and improve report performance. Using Power Query Editor, you can easily eliminate duplicate records, handle null or empty values, and maintain data integrity before loading it into the model.
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Which tool in Power BI is used to remove duplicates from a dataset?
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Question 2 of 15
2. Question
Where is the “Remove Duplicates” option located in Power Query Editor?
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Question 3 of 15
3. Question
Removing duplicates in Power Query works by comparing:
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Question 4 of 15
4. Question
Which option is used to remove rows with null values in a specific column?
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Question 5 of 15
5. Question
What happens if you select multiple columns before clicking “Remove Duplicates”?
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Question 6 of 15
6. Question
Which step is added in the Applied Steps pane when you remove duplicates?
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Question 7 of 15
7. Question
Which transformation can be used instead of “Remove Duplicates” to keep only unique values?
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Question 8 of 15
8. Question
In Power Query, removing blank rows means deleting rows that:
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Question 9 of 15
9. Question
Which feature replaces blank cells with a specific value in Power Query?
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Question 10 of 15
10. Question
What is the difference between “Remove Duplicates” and “Keep Duplicates” in Power Query?
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Question 11 of 15
11. Question
Which step should be done before removing duplicates to ensure accuracy?
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Question 12 of 15
12. Question
How do you remove rows where a specific column is blank?
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Question 13 of 15
13. Question
If a dataset has 100 rows and 10 are duplicates, how many rows remain after removing duplicates?
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Question 14 of 15
14. Question
Can removing duplicates be undone in Power Query?
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Question 15 of 15
15. Question
Why is removing blanks and duplicates important before data loading?
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Summary
These Removing Duplicates and Blanks in Power BI MCQs cover the use of Power Query Editor to eliminate duplicate records, handle null values, and improve data quality. Mastering these cleaning steps ensures accurate, reliable, and optimized Power BI reports.
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