In this deck, we'll explore three common ways to show data visually: pictograms, bar charts, and line graphs. You'll learn how to read and understand what each type of diagram is telling you. While drawing these is best done with pen and paper, we'll cover all the key rules you need to know.

Let's start with pictograms. A pictogram is a chart that uses pictures or symbols to represent data. For example, you might use a picture of a car to show car sales. They are a simple and visual way to compare amounts.

The most important part of a pictogram is the key. The key explains what each picture or symbol stands for. For instance, a key might say that one circle symbol represents 10 people. Without the key, the pictogram is meaningless.

To read a pictogram, you use the key. If the key says one star equals 4 goals, and a footballer has three stars next to their name, you'd multiply 3 by 4 to find they scored 12 goals. Sometimes you'll see half a symbol, which represents half the value.