We judge the value of a point on a line by its position along a scale. This judgment does not depend on zero. Even if you think you judge a bar graph by the position of the top of the bar ...

The scale on the vertical axis prevents the type of trickery shown in Figure 3. Figure 5 shows a line graph where the tick marks are not spaced evenly and do not appear to be an easily ...

Save guides, add subjects and pick up where you left off with your BBC account. A line graph is used to spot trends in data over time. In order to produce a line graph, data is required.