6 Data Visualization Online Quiz Questions

A report compares book borrowing across several libraries, and some library names are long. Which chart is a useful choice for making the category comparisons and labels easy to scan?

A bar chart compares the magnitudes of values. Starting its value axis at zero is generally appropriate because bar length encodes the values.

A survey reports that $20\%$ of $5{,}000$ people chose an option. How many people chose it? Enter a whole number.

A teacher wants a concise summary of exam scores that shows the median, quartiles, and possible outliers. Which chart should the teacher choose?

A scatter plot shows that students who study more tend to have higher exam scores. This pattern alone proves that studying more caused the higher scores.

A chart annotation points to a sharp rise in website visits. What is the most responsible way to phrase it when the analysis has not investigated why visits rose?

A team is presenting estimates from a sample, and uncertainty could affect how readers interpret small differences. Which actions are appropriate? Select all that apply.

What chart type uses segments stacked within bars to show how a total is divided into parts?

A chart must distinguish several groups for readers who may not perceive its colors in the same way. Which design choices can help? Select all that apply.

A chart headline states its main pattern. Which information should its caption add to help readers understand the scope of the data?

A pie chart can be easiest to compare when a budget is divided into only a few clearly distinct categories.

Two classes have the same mean exam score. Explain one important feature of their score distributions that the mean could hide, and name a chart that could help reveal it.

You want to compare the number of books borrowed from several libraries. Which chart is the most suitable choice?

A budget needs to be shown as parts of a whole. It has only a few categories, and each category is clearly distinct. Which chart is a suitable choice?

You need a compact summary of a set of exam scores that shows the median, quartiles, and possible outliers. Which chart should you use?

Two groups have different sizes: 50 people and 5,000 people. Each group has 20% in a category. Which interpretation is correct?

Before creating a chart, what should you write down to guide the choices you make?

A chart will be shared with people who may not be able to see it. Name one kind of alternative the guidance recommends providing so they can access its message or values.