Graphing: Picture Graphs, Bar Graphs, and Line Graphs

A picture graph uses pictures or symbols to represent data. Each picture represents a certain number of items.

A bar graph uses rectangular bars to show the quantity of different categories. The length of each bar represents the amount.

A line graph uses points connected by lines to show how something changes over time.

Scale.

A key explains what the symbols or colors in the graph represent.

Add the values of all the bars together.

It means that category has a higher quantity compared to the others.

The item with the shortest bar or the lowest number.

Look for the tallest bar, which represents the highest number of sales.

Data is the information collected that is represented in the graph.