5 types of evidence used to persuade your audience

Data. Data is the type of evidence used most often in presentations.

Expertise. This is the opinion of someone your audience will accept as an authority on the subject — an expert, in other words.

Cases. This type of evidence is most useful when you have examples that are close to the experience of your audience members or particularly meaningful to them.

Image. This is a way of relating a new thing (your recommendation) to something familiar. Image is an explanatory form of evidence.

Story. This is something from your personal experience.