Appian Certified Associate Developer Practice Exam

In a pie chart, when a user hovers over a specific slice, tooltips are generally employed to display additional information related to that slice. This can include relevant details such as the specific value represented by that slice, its percentage of the total, or any additional labels that provide context to the data being visualized. Tooltips enhance the interactivity of the chart, allowing users to gain insights without cluttering the visual by displaying too much information at once.

The other options, while associated with pie charts, do not fulfill the role of showing values upon hovering. Legend titles serve to identify what each slice represents but do not provide additional information on hover. Overall total values might be displayed elsewhere, such as in a summary or as part of the chart's title, but are not typically shown directly upon hovering a specific slice. Slice colors are important for differentiating between segments visually but are not interactive elements that convey information through hover actions. Thus, tooltips for pie slices are the most appropriate mechanism for displaying values when users interact with a pie chart.