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Question 153 of 966
Visualize and analyze the data →hardMultiple ChoiceObjective-mapped

Quick Answer

The correct measure expression is SELECTEDMEASURE() - CALCULATE(SELECTEDMEASURE(), 'Time Intelligence'[Name] = "PY"). This works because SELECTEDMEASURE() dynamically returns the measure currently being evaluated in the calculation group, such as Total Sales, and the CALCULATE function modifies that context to compute the previous year version of the same measure. On the Microsoft Power BI Data Analyst PL-300 exam, this tests your understanding of calculation groups as a way to avoid writing multiple time intelligence measures—a common trap is forgetting that SELECTEDMEASURE() must be wrapped in CALCULATE to change the filter context, or misapplying it outside a calculation item. A helpful memory tip is to think of SELECTEDMEASURE() as a placeholder that lets you write one formula for all base measures, then subtract the shifted version for year-over-year differences.

PL-300 Visualize and analyze the data Practice Question

This PL-300 practice question tests your understanding of visualize and analyze the data. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

Exhibit

Refer to the exhibit.

Power BI XMLA endpoint response snippet:
```
<Return>
  <Results>
    <Result>
      <Type>Measure</Type>
      <Name>Total Sales</Name>
      <Expression>SUM(Sales[Amount])</Expression>
      <FormatString>#,##0</FormatString>
    </Result>
    <Result>
      <Type>Measure</Type>
      <Name>Sales YoY</Name>
      <Expression>CALCULATE(SUM(Sales[Amount]), SAMEPERIODLASTYEAR('Date'[Date]))</Expression>
      <FormatString>#,##0</FormatString>
    </Result>
    <Result>
      <Type>CalculationGroup</Type>
      <Name>Time Intelligence</Name>
      <CalculationItems>
        <CalculationItem>
          <Name>Current</Name>
          <Expression>SELECTEDMEASURE()</Expression>
        </CalculationItem>
        <CalculationItem>
          <Name>PY</Name>
          <Expression>CALCULATE(SELECTEDMEASURE(), SAMEPERIODLASTYEAR('Date'[Date]))</Expression>
        </CalculationItem>
      </CalculationItems>
    </Result>
  </Results>
</Return>
```

You see the above XMLA response when querying a Power BI dataset. You want to create a measure that calculates the difference between current sales and previous year sales, but you want to use the calculation group to avoid writing multiple measures. Which measure expression should you use?

Question 1hardmultiple choice
Full question →

Exhibit

Refer to the exhibit.

Power BI XMLA endpoint response snippet:
```
<Return>
  <Results>
    <Result>
      <Type>Measure</Type>
      <Name>Total Sales</Name>
      <Expression>SUM(Sales[Amount])</Expression>
      <FormatString>#,##0</FormatString>
    </Result>
    <Result>
      <Type>Measure</Type>
      <Name>Sales YoY</Name>
      <Expression>CALCULATE(SUM(Sales[Amount]), SAMEPERIODLASTYEAR('Date'[Date]))</Expression>
      <FormatString>#,##0</FormatString>
    </Result>
    <Result>
      <Type>CalculationGroup</Type>
      <Name>Time Intelligence</Name>
      <CalculationItems>
        <CalculationItem>
          <Name>Current</Name>
          <Expression>SELECTEDMEASURE()</Expression>
        </CalculationItem>
        <CalculationItem>
          <Name>PY</Name>
          <Expression>CALCULATE(SELECTEDMEASURE(), SAMEPERIODLASTYEAR('Date'[Date]))</Expression>
        </CalculationItem>
      </CalculationItems>
    </Result>
  </Results>
</Return>
```

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

✓

SELECTEDMEASURE() - CALCULATE(SELECTEDMEASURE(), 'Time Intelligence'[Name] = "PY")

With a calculation group, you can define a measure that references the calculation items. The expression 'SELECTEDMEASURE() - CALCULATE(SELECTEDMEASURE(), 'Time Intelligence'[Name] = "PY")' will compute the difference between the current measure (e.g., Total Sales) and its previous year version.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✗

    CALCULATE([Total Sales], 'Time Intelligence'[Name] = "Current") - CALCULATE([Total Sales], 'Time Intelligence'[Name] = "PY")

    Why it's wrong here

    This references a specific measure, not dynamic.

  • ✗

    SUM(Sales[Amount]) - CALCULATE(SUM(Sales[Amount]), SAMEPERIODLASTYEAR('Date'[Date]))

    Why it's wrong here

    This does not use the calculation group; it's a hardcoded measure.

  • ✓

    SELECTEDMEASURE() - CALCULATE(SELECTEDMEASURE(), 'Time Intelligence'[Name] = "PY")

    Why this is correct

    This uses the calculation group to dynamically compute the difference.

    Related concept

    Read the scenario before looking for a memorised answer.

  • ✗

    SUM(Sales[Amount]) - [Sales YoY]

    Why it's wrong here

    This duplicates the existing measure and doesn't use the calculation group.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Detailed technical explanation

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

KKey Concepts to Remember

  • Read the scenario before looking for a memorised answer.
  • Find the constraint that changes the correct option.
  • Eliminate answers that are true in general but not in this case.
  • Use explanations to understand the rule behind the answer.

TExam Day Tips

  • Underline the problem statement mentally.
  • Watch for words such as best, first, most likely and least administrative effort.
  • Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.

What to study next

Got this wrong? Here's your next step.

Identify which PL-300 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

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FAQ

Questions learners often ask

What does this PL-300 question test?

Visualize and analyze the data — This question tests Visualize and analyze the data — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: SELECTEDMEASURE() - CALCULATE(SELECTEDMEASURE(), 'Time Intelligence'[Name] = "PY") — With a calculation group, you can define a measure that references the calculation items. The expression 'SELECTEDMEASURE() - CALCULATE(SELECTEDMEASURE(), 'Time Intelligence'[Name] = "PY")' will compute the difference between the current measure (e.g., Total Sales) and its previous year version.

What should I do if I get this PL-300 question wrong?

Identify which PL-300 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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Last reviewed: Jun 21, 2026

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This PL-300 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-300 exam.