Variables in DAX allow you to store intermediate results in a calculation, improving readability, maintainability, and performance of your Power BI measures and calculated columns. They are declared using the VAR keyword and returned with the RETURN keyword.
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Which keyword is used to declare a variable in DAX?
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Question 2 of 15
2. Question
Which keyword is used to output the value of a variable in DAX?
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Question 3 of 15
3. Question
What is the main purpose of using variables in DAX?
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Question 4 of 15
4. Question
Which of the following is the correct syntax for using a variable in DAX?
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Question 5 of 15
5. Question
What will the following DAX return? VAR a = 5 VAR b = 3 RETURN a + b
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Question 6 of 15
6. Question
Can you declare multiple variables in the same DAX expression?
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Question 7 of 15
7. Question
What is the scope of a DAX variable?
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Question 8 of 15
8. Question
Do variables in DAX improve performance?
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Question 9 of 15
9. Question
What will happen if you reference a variable before declaring it in DAX?
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Question 10 of 15
10. Question
Which of the following is NOT a valid variable name in DAX?
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Question 11 of 15
11. Question
Can a variable store the result of a table expression in DAX?
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Question 12 of 15
12. Question
Which of the following is a benefit of variables in DAX?
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Question 13 of 15
13. Question
What will the following return?
VAR Discount = 0.1
VAR Price = 500
RETURN Price * (1 – Discount)
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Question 14 of 15
14. Question
Can variables in DAX be used inside CALCULATE?
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Question 15 of 15
15. Question
Which is a common best practice when using variables in DAX?
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Summary
These Power BI DAX Variables MCQs cover declaration, syntax, scope, performance benefits, and best practices. Mastering variables helps create efficient, clean, and reusable DAX calculations in Power BI.
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