Alt text gives screen readers a summary of the bar chart's data

Enhance reports for usability and storytelling
Answer Correct answer: B — alt text carries the chart's data summary to screen reader users.

You have a Power BI report that contains a bar chart. The bar chart displays sales by country. You need to ensure that a summary of the data shown on the bar chart is accessible by using a screen reader. What should you configure on the bar chart?

  1. conditional formatting
  2. alt text Correct Answer
  3. the tab order
  4. the layer order
alt text screen reader chart summary accessible visuals

Community Votes

B
100%

100% of anonymous learners picked answer B. Votes are pick records left by other test-takers — they are not the verified answer.

Community Insight

Alt text is the property screen readers announce for a visual — writing a sales-by-country summary there makes the chart's data available to non-visual users.

A bar chart showing sales by country must expose a summary of its data to screen reader users, so the visual property that carries descriptive text must be configured.

Reaching for tab order or layer order — both govern navigation and stacking for sighted keyboard users; neither conveys any information about the chart's data.

Community Discussion (3 comments)

EdExamTopics 👍 3 Selected: B
Alt text (alternative text) provides a textual description of the visual content, which can be read by screen readers.
SylUK 👍 1 Selected: B
The answer is B : alt text
b2775a4 👍 1 Selected: B
Alt text (alternative text) is used to provide a textual description of the visual content for users relying on screen readers. In this case, configuring alt text ensures that a summary of the bar chart (e.g., “Sales by country”) can be read out by a screen reader, making the data accessible.

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Expert Analysis

Why the Answer Is Correct

When a screen reader user focuses a visual, it announces the visual's alternative text, which is authored in the visual's format pane under General > Alt text. Writing a summary of the sales-by-country data there (B) is exactly how Microsoft documents making chart content accessible, delivering the data summary through the screen reader.

Why the Other Options Are Wrong

Conditional formatting (A) changes how cells and bars are colored by value — a visual encoding that screen readers do not narrate as a summary. Tab order (C) sequences which visual receives keyboard focus next, controlling navigation rather than content description. Layer order (D) decides overlap rendering between visuals; no text is involved.

Community Comment Notes

Commenters agree alt text provides the textual description screen readers read, matching the requirement for a data summary. The vote is unanimous for B.

Official Reference

https://learn.microsoft.com/en-us/power-bi/create-reports/desktop-accessibility-creating-reports

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