At the age of big data and reporting, we constantly present different kinds of charts to managing staffs, clients... But it is not that easy to create top of the line presentations that actually interest the audience.
Most of the time, sunk by the numerous data, diagrams presented, the audience tend not to listen.
Also, another very annoying habit I find most of the time of my suppliers: the ever growing market syndrome. The supplier comes with a 40 pages presentation with graphs only showing numbers growing, 1st position ranking, and so on... So annoying, as it does not reflect the truth of the situation.
Here is an interesting infographic showing the different ways you may present your point, either with data or by making some visual analogies. A great infographic to look at before creating a power point presentation, to assess the question: Am I clear in the analysis I made?
What really matters is to be able to use the right analogy to provide the right message.
You can also find more infographics at Visualistan