Report Builder overview in Power BI - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Understanding Report Builder Components

Which component in Power BI Report Builder is used to create a table that displays data in rows and columns?

A Table

B Matrix

C Chart

D Textbox

💡 Hint

Think about the component that organizes data simply in rows and columns without grouping.

The Table component displays data in a simple grid of rows and columns, perfect for detailed data display.

❓ dax_lod_result

intermediate

DAX Expression Output in Report Builder

Given a dataset with sales data, what is the output of this DAX measure in Report Builder?

Sales Amount = SUM(Sales[Amount])

Assuming the Sales table has Amount values: 100, 200, 300.

Power BI

Sales Amount = SUM(Sales[Amount])

A 300

B 0

C 100

D 600

💡 Hint

SUM adds all values in the column.

The SUM function adds all Amount values: 100 + 200 + 300 = 600.

❓ visualization

advanced

Best Visualization for Showing Trends Over Time

In Report Builder, which visualization is best to show sales trends over several months?

A Table

B Matrix

C Line Chart

D Pie Chart

💡 Hint

Think about which chart type shows continuous data changes over time.

Line charts are ideal for showing trends over time because they connect data points in a continuous line.

🔧 Formula Fix

advanced

Identifying Error in Report Builder Expression

What error will this expression cause in Report Builder?

=Sum(Fields!Sales.Value + Fields!Cost.Value)

A Runtime error: Division by zero

B Syntax Error due to incorrect Sum usage

C No error, returns sum of Sales and Cost

D Type Error: Cannot add fields

💡 Hint

Check how Sum function expects its argument.

The Sum function expects a single numeric field, not an expression adding two fields inside it.

❓ data_modeling

expert

Handling Many-to-Many Relationships in Report Builder

You have two tables: Customers and Products, linked by a Sales table with many-to-many relationships. Which approach best models this in Report Builder to avoid double counting?

A Create a bridge table and use it in relationships

B Ignore relationships and use separate datasets

C Use a single table combining all data with duplicates

D Use only the Sales table without relationships

💡 Hint

Think about how to handle many-to-many relationships properly in BI models.

A bridge table helps manage many-to-many relationships by linking Customers and Products without duplication.

Practice

1. What is the primary purpose of Power BI Report Builder?

easy

A. To create detailed, printable reports using a visual drag-and-drop interface

B. To write complex DAX formulas for data modeling

C. To design dashboards with interactive visuals only

D. To manage data sources and refresh schedules

Solution

1. Step 1: Understand Report Builder's main function

   Report Builder is designed to create detailed, printable reports with tables, charts, and text.

2. Step 2: Compare options with this function

   Only To create detailed, printable reports using a visual drag-and-drop interface describes creating detailed, printable reports using drag-and-drop, matching Report Builder's purpose.

3. Final Answer:

   To create detailed, printable reports using a visual drag-and-drop interface -> Option A

4. Quick Check:

   Report Builder = Detailed printable reports [OK]

Hint: Remember: Report Builder = printable reports, not dashboards [OK]

Common Mistakes:

• Confusing Report Builder with Power BI Desktop dashboards
• Thinking Report Builder is for data modeling
• Assuming it manages data refresh schedules

2. Which of the following is the correct way to add a chart in Power BI Report Builder?

easy

A. Write a DAX formula to generate the chart

B. Import a chart image from external software

C. Drag and drop the Chart item from the toolbox onto the report canvas

D. Use SQL queries to create the chart directly

Solution

1. Step 1: Identify how visuals are added in Report Builder

   Report Builder uses drag-and-drop from the toolbox to add items like charts.

2. Step 2: Evaluate each option

   Drag and drop the Chart item from the toolbox onto the report canvas correctly describes dragging the Chart item onto the canvas. Others involve coding or importing images, which are not standard methods.

3. Final Answer:

   Drag and drop the Chart item from the toolbox onto the report canvas -> Option C

4. Quick Check:

   Drag-and-drop charts = Drag and drop the Chart item from the toolbox onto the report canvas [OK]

Hint: Charts come from toolbox drag-and-drop, not code [OK]

Common Mistakes:

• Trying to write DAX to create charts in Report Builder
• Confusing Report Builder with Power BI Desktop visuals
• Importing images instead of using built-in chart tools

3. Given a report with a table and a chart added in Report Builder, what happens when you preview the report?

medium

A. The report displays a static preview with data rendered in the table and chart

B. The report shows a live interactive dashboard with slicers

C. The report opens the data source query editor

D. The report automatically publishes to Power BI Service

Solution

1. Step 1: Understand the preview function in Report Builder

   Preview shows a static rendering of the report with data in tables and charts, not interactive dashboards.

2. Step 2: Compare options with preview behavior

   The report displays a static preview with data rendered in the table and chart correctly describes a static preview. Options B, C, and D describe other unrelated actions.

3. Final Answer:

   The report displays a static preview with data rendered in the table and chart -> Option A

4. Quick Check:

   Preview = Static report view [OK]

Hint: Preview shows static report, not interactive dashboard [OK]

Common Mistakes:

• Expecting interactive slicers in Report Builder preview
• Thinking preview edits data source queries
• Assuming preview publishes report automatically

4. You added a table to your report in Report Builder but it shows no data when previewed. What is the most likely cause?

medium

A. The table was added using drag-and-drop from the toolbox

B. The data source connection is not configured or is invalid

C. The report was saved before adding data

D. The preview mode only shows charts, not tables

Solution

1. Step 1: Identify why a table shows no data in preview

   If the data source connection is missing or invalid, the table cannot retrieve data to display.

2. Step 2: Evaluate other options

   The table was added using drag-and-drop from the toolbox is normal behavior, C does not affect data display, and D is false because preview shows all report items.

3. Final Answer:

   The data source connection is not configured or is invalid -> Option B

4. Quick Check:

   No data in table = Data source issue [OK]

Hint: Check data source connection first if no data appears [OK]

Common Mistakes:

• Assuming drag-and-drop causes no data
• Thinking saving report affects data display
• Believing preview excludes tables

5. You want to create a report in Report Builder that includes a table, a chart, and a text box with a title. Which steps should you follow to build and share this report?

hard

A. Use Power BI Service to build the report; download it as PDF; upload to Report Builder

B. Write SQL queries for each visual; export the report as Excel; email it manually

C. Create visuals in Power BI Desktop; import them into Report Builder; publish directly

D. Drag and drop the table, chart, and text box onto the canvas; preview the report; save and publish it for sharing

Solution

1. Step 1: Build the report using drag-and-drop

   Report Builder allows adding tables, charts, and text boxes by dragging them onto the canvas.

2. Step 2: Preview, save, and publish the report

   After building, preview to check layout, then save and publish to share with others.

3. Final Answer:

   Drag and drop the table, chart, and text box onto the canvas; preview the report; save and publish it for sharing -> Option D

4. Quick Check:

   Drag-drop, preview, save, publish = Drag and drop the table, chart, and text box onto the canvas; preview the report; save and publish it for sharing [OK]

Hint: Build with drag-drop, preview, then save and publish [OK]

Common Mistakes:

• Trying to write SQL for visuals in Report Builder
• Confusing Report Builder with Power BI Desktop or Service
• Skipping preview before publishing