The article talks about the increasing number of people over 65 getting surgery in the year before they die. The chart attached in the article contains data of the percentage of patients who had surgery in the year before death. They could have used better colors than gray and dark gray, but the article gives a good representation of how many people are getting surgery in each state. I actually think any other map a gray scale would be efficient. I think the chart also does a good job with trying to be accurate as possible, with the differences in percentage being four or five apart. A lot of charts and diagrams try and compare between states with a scale difference of ten or fifteen percent. Ultimately, I think the chart added to the article and made the story that much more interesting and that much more credible.
New York Times surgery chart article