IIBA CBDA Exam - Topic 3 Question 48 Discussion

Actual exam question for IIBA's CBDA exam

Question #: 48
Topic #: 3

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?

ASunburst

BScatterplot

CPie chart

DLine

Show Suggested Answer

Suggested Answer: B

A scatterplot is a type of chart that shows the relationship between two variables by plotting data points on a two-dimensional plane. A scatterplot can help the professor to understand the normal tendency and outliers of exam performance results over the past 5 years by displaying the distribution, trend, and correlation of the data. For example, the professor can use the x-axis to represent the year and the y-axis to represent the exam score, and see how the scores vary over time and across different exams. Outliers can be identified as data points that are far away from the main cluster or the line of best fit12 Reference: 1: Scatter Plot - Statistics How To 2: Scatterplots - IIBA BABOK Guide v3

by Gladys at Apr 07, 2026, 04:19 AM

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1 month ago

I think the professor should use a line chart to show trends over the years, but I'm not entirely sure if that's the best choice.

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