Certificate in Business Data Analytics (CBDA) — Question 53

A professor at a university has received a few complaints of the exams being too difficult. The professor is looking at exam performance results over the past 5 years to understand the normal tendency and outliers.
Which chart should the professor use?

Answer options

• A. Pie chart
• B. Line
• C. Sunburst
• D. Scatterplot

Correct answer: D

Explanation

The scatterplot is the most effective choice for analyzing exam performance trends and spotting outliers, as it allows for the visualization of individual data points in relation to two variables. In contrast, a pie chart is used for categorical data, a line chart is better suited for continuous data over time but does not effectively show individual points, and a sunburst chart is primarily for hierarchical data, making them less appropriate for this scenario.