Chapter 3 Multiple Choice Questions

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. Following what order of categories would be the most intuitive way to present nominal data in a bar chart?

Alphabetically ordered by category name correct incorrect

Ordered to produce a central, single peak in category values correct incorrect

Sequentially ordered, grading from the largest-value category to the smallest-value category correct incorrect

Ordered by category name, from the longest name to the shortest name correct incorrect

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. Why might you want to add grid lines (aka graph lines) behind the bars of a bar chart?

To make the graph look more professional correct incorrect

To increase the visual appeal of the graph correct incorrect

To emphasize the most interesting values represented by the bars correct incorrect

To make the values represented by each bar more readable, thereby aiding comparison correct incorrect

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. Why might you want to add minor tick marks to the y-axis of a vertical bar chart (or the x-axis of a horizontal bar chart)?

To aid interpretation of the values represented by each bar correct incorrect

To differentiate the two axes correct incorrect

To make the values on the y-axis stand out more correct incorrect

To make the axis look less plain correct incorrect

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. When is it appropriate to use a grouped bar chart to present data?

When values are normally distributed correct incorrect

When you want to compare the data between different subgroups (or samples) of the main categories in the bar chart correct incorrect

When giving a professional presentation correct incorrect

When the values represented by bars are very similar and can therefore be grouped together correct incorrect

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. When might it be appropriate to use a stacked bar chart to present data?

When you want to increase the visual appeal of a bar chart by making it more colourful correct incorrect

When you want to emphasize the most interesting values in your data correct incorrect

When you have % data for subgroups that will always add up to 100% correct incorrect

When the values represented by bars are very different from each other correct incorrect

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. In which of these situations would it NOT be useful to consider presenting data as a horizontal bar chart?

When there are a large number of different categories that wouldn't fit across a portrait-oriented page correct incorrect

When the metric displayed is duration/time correct incorrect

When you want the bar chart to look different from others in your document or presentation correct incorrect

When the different categories have long titles that would be difficult to include below a vertical bar correct incorrect