Some authors call the broken line graph a line graph.
The broken line graph can be likened to a rod graph in the sense that the segments connect the vertices of the rods.
The broken line graph is particularly useful for representing the distribution of a quantitative statistical characteristic. We often use it to illustrate a phenomenon that evolves over time.
|Here are the data observed for temperatures from July 22nd to July 31st, inclusive:
The illustration on the right reproduces this data in the form of a broken line graph.
We can make several interpretations based on this graph.
- Between July 22nd and 25th, the temperature increased by 8 degrees.
- Between July 27th and 29th, the temperature dropped 9 degrees.
- On July 26th, it was hotter than on July 22nd