What is the importance of charts in a powerpoint presentation?

I think the question can be best answered by addressing why chart are important at all.

Charts are important for various reasons:

1. Charts convey information is a way that is not propositional, that is, charts are visual. This is an important point, because some people are visual learners.

2. Charts also break up monotony for people who are more propositional learners. This might help if the presentation is long.

3. Charts also convey lots of information in an easy format. This alone is worth it!

4. Finally, charts can plot various variables on an x and y plane for comparison purposes. In short, one can analyze data effectively this way.

Powerpoint does all of these things extremely well!