Dataviz logo
Oxford Consultants for Social Inclusion logo

Line graph

Current rating No ratings for this example yet
Rate this Impact low high Accuracy low high Your level of expertise
What are ratings?

Ratings let you assess a visualisation according to:
 

Impact:
How much a visualisation makes you take notice of it
 

Accuracy:
How well it portrays the true data behind it
 

Rate visualisations according to your own impressions and expertise. We also ask you to let us know how you rate your own level of expertise in terms of data and visualisation, so that we can filter ratings further in future.
 

For more information on ratings and levels of expertise, see our help page.

Line graph
The set of line graphs shows how demographics of students in American schools have evolved in the last two decades. Here, New York City schools is selected, compared with New York State schools (gray line).

The blue and gray lines are almost parallel everywhere, which tells us that in terms of the change in demographic composition, New York City pretty much resembled New York State during this entire period.
However, in terms of demographic composition, rather than the change in composition, New York City schools are very different from the rest of the state, in that the proportion of white is lower by a third while that of minorities are much higher, especially black and Hispanic students.
State-wide (as well as city-wide), black and white students have been declining as a proportion while Hispanics and Asians have increased.
The extent of the change is immediately visible, Asians have jumped from 7% to 14% for example.
Visual types
Level of expertise
Interactive features
None
Benefits & pitfalls to avoid
  • Line-charts imply that data is continuously changing. If your data is discrete you might consider a bar-chart instead.