Used to plot the relationship between two variables, often shows a change in a variable over time. The ends of the line graph do not have to join to the axes.
Bar charts
Represents the frequencies of results across different categories or conditions. All bars are equal widths and the height of the bar represents the frequency of the result.
Histogram
Represents continuous data, the area of the bar represents the frequency. Bars can be different widths and there are no gaps inbetween bars.
