Final answer:
During lengthy speaking presentations, abstract images on the screen help maintain the audience's focus on the speaker. Using visuals like high-quality graphs or a PowerPoint slide deck can support the oral content when directly referenced, and choosing the right type of graph or chart is crucial for clear data representation.
Step-by-step explanation:
During a presentation requiring lengthy speaking periods without referencing slides, it's best to display visuals that are relevant and supportive to the content of the speech but not distracting. This could include abstract images which provide a neutral background to focus the audience's attention on the speaker's words. Detailed bullet points, video clips, graphs, and charts may divert attention, so if these elements are not integral to the point being discussed at the moment, they should be used sparingly or only when directly referenced.
Using visuals in an oral presentation is crucial, as they help to share data and illustrate points effectively. Having said that, visuals should be clear, concise, and of high quality, large enough for the audience to see. For example, a PowerPoint slide deck might offer visualization for the given oral presentation, with the potential to zoom in on important graphics or switch to larger visuals if more detail is needed. It's also important to consider accessibility and how visual aids can be adapted for those with visual or auditory limitations.
When presenting data, such as in the case of researchers A and B, the decision between a pie graph or a bar graph depends on the type of data and what aspect of the data you wish to emphasize. Pie graphs are suitable for showing proportions within a whole, while bar graphs are more desirable for comparing quantities. It's essential to avoid potential display problems like tiny, hard-to-read graphs or complex charts that may confuse the audience instead of aiding comprehension.