Graphing

Time To Read

1–2 minutes

Date Last Modified

There are certain decisions that must be made even before you type the data into the computer. Humans are able to be proactive about these aspects of graphing. Computers are not.

Take this graph, made with Microsoft’s Excel. What is this showing? Shoe width versus shoe size? What happened to B? I can’t make out the bar for D, is it something like 1.75 or 1.80? Is the bar for A supposed to be 3 or just a tad more than 3? This graph is poorly labeled, leaving the reader to make many assumptions about the topic. These are the seemingly simple details of which I previously spoke: A graph title, axes titles, data labels, etc…

With labels on this graph, the reader is no longer left to thumb through previous pages to find the information. There is no data table needed, because each of those columns has the value on them. I can now clearly see those values of 1.8 and 3.1 grams for venison and pork (respectively). The x-axis includes an overall label, letting me know that these animal-type names along the bottom refer to types of meat, not a living animal. This graph even has a figure number assigned to it so that Figure 1: Rendered Weight of Fat from Meat Type can be specifically referred to in its accompanying text. Don’t let the reader make any assumptions. Tell them what you want them to see with your labels.

Scatter Plots

List of terms