MathBench > Visualization

A Graphing Primer

Learning Outcomes

After completing this module you should be able to:

The case of the confusing axes

In this module we'll talk about how to graph data, and particularly how to set up the graph.

Below you will find an easy checklist for making the perfect graph. On the following pages, we'll practise some of the skills you will need...

I'm going to quickly show you these steps on a single graph, and then as we go through each step more slowly, I'll show you the sorts of trainwrecks that occur if you ignore these steps.

lawrence welkA sample graph: eyesight and TV viewing distance

When I was growing up, the older folks frequently rained dire predictions on our heads about our TV viewing habits. Specifically, what happens to our eyesight if we were to sit too close to the TV. Anyway, I could imagine my poor grandmother collecting the data for the graph below, hoping to prove her point (that sitting too close to the TV results in poor eye sight) and forcing us to sit further from the TV screen:

viewing distance 10 20 30 40 50 60 70 80 100 120 140
eyesight remaining 75 80 85 88 92 95 97 98 98 98 98