Analyzing Data with Microsoft Power BI (legacy) — Question 9

You need to create a visualization that compares revenue and cost over time.
Which type of visualization should you use?

Answer options

• A. stacked area chart
• B. donut chart
• C. line chart
• D. waterfall chart

Correct answer: C

Explanation

A line chart is the most effective way to compare revenue and costs over time, as it clearly shows trends and changes in values. Stacked area charts can illustrate the total but may obscure individual data series, while donut charts are not suitable for time series comparisons. Waterfall charts are useful for showing cumulative effects but are not ideal for continuous data over time.