
Calculated Fields with Dax - 3
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20 questions
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- Q1How would you extract the birth year from a customer’s BirthDate field in Power BI?Use the MONTH function on the BirthDate columnUse the DATEVALUE function on the BirthDate columnUse the FORMAT function on the BirthDate columnUse the YEAR function on the BirthDate column60s
- Q2When should you use the RELATED function in Power BI?To count distinct values in a columnTo perform text manipulationsTo aggregate data in the same tableTo retrieve values from a related table on the one side of a one-to-many relationship60s
- Q3Why is RELATED considered similar to VLOOKUP in Excel?Because it retrieves related values using predefined table relationshipsBecause it formats date valuesBecause it performs string concatenationBecause it counts rows in a table60s
- Q4What is a key requirement for the RELATED function to work?The data types of columns must be the sameThe column names must match exactlyThe tables must have identical structuresThere must be a valid one-to-many relationship between tables60s
- Q5In what context does the RELATED function operate in Power BI?Row contextFilter contextCell contextColumn context60s
- Q6How does CALCULATE modify filter context in DAX?It applies a set of defined filters to an expressionIt counts the number of rows in a tableIt removes all filters from a tableIt formats data as a percentage60s
- Q7What is the primary use of the CALCULATE function?To perform arithmetic operationsTo evaluate an expression under a set of defined filtersTo concatenate text valuesTo convert data types60s
- Q8When defining filters in CALCULATE, what type of expressions are valid?Aggregations of other measuresSimple Boolean expressions with fixed valuesComplex text manipulationsDate and time functions only60s
- Q9How would you create a measure to calculate total orders only for bulk orders (order quantity > 1)?Use DISTINCTCOUNT on the order quantity columnUse COUNTROWS with a filter on order quantity > 1Use CALCULATE with a filter on order quantity > 1Use RELATED to pull in the order quantity column60s
- Q10What is the effect of using CALCULATE with a filter that overrides an existing filter context?It replaces the initial filter context with the new oneIt merges the new filter with the existing filterIt duplicates the filter contextIt ignores the new filter and keeps the existing one60s
- Q11How does CALCULATE handle conflicting filter contexts?It ignores both filtersIt returns an errorIt prioritizes the filter specified in CALCULATEIt merges both filters together60s
- Q12Why is it important to understand how CALCULATE modifies filter context?To simplify the data modelTo improve the performance of DAX queriesTo ensure accurate and expected results in measuresTo format numerical data correctly60s
- Q13How would you respond to a VP’s concern about rising bike returns using DAX measures?Create measures for Bike Returns, Bike Sales, and Bike Return Rate, and analyze trends over timeUse the SUM function to calculate total returnsGenerate a bar chart in PowerPointCreate a pivot table in Excel60s
- Q14Why is it critical to know that DAX measures don’t sum visible values in reports?Because measures are static and don't changeBecause DAX uses cell references like ExcelBecause measures are calculated independently based on filter contextBecause measures always calculate totals only60s
- Q15How does the ALL function interact with filter context in DAX?It merges filters from different tablesIt duplicates the existing filter contextIt removes all filters from the specified table or columnIt adds filters to the specified table or column60s