The table shows the number of visitors per quarter (per three months) to a seaside town.
|Quarter (year)||1 (2005)||2 (2005)||3 (2005)||4 (2005)||1 (2006)||2 (2006)||3 (2006)||4 (2006)|
If this data is plotted onto a graph, this will be a time series graph, as it shows the frequencies over time.
From the graph, it can be seen that there is a large fluctuation each year in the amount of visitors. However, there is a pattern that repeats each year. For example, many more people visit in the summer months than they do in the winter months, and this is the same year by year.