Let's break down the essential Excel chart types and how to use them effectively. In an Excel bar chart, each data point is represented by a rectangular, horizontal bar. The length of each bar is ...

Reading stock charts can give you key insights into a company's perceived value. You can learn to recognize signals for when ...

It is possible to read data and make comparisons using a bar chart. This type of graph, called a dual bar chart, shows the eye colour of year 7 and year 8 students. Image caption, Using the ...

Different types of graph have different uses. A line graph shows how data changes over time. For example, how the volume of traffic changes over a day so you can see the busiest times. A bar chart ...