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 is best for comparing groups of data.

Technical analysis is the study of the price movement and patterns of a security. By scrutinizing a security's past price action, primarily through charts and indicators, traders can forecast ...

Choosing the right graph is very important. Bar charts and line graphs can be combined. Climate graphs are an example of this. The x-axis shows the months of the year and there are two y-axes to ...