Approval of President Bush. Gray points are polls, blue line is my estimate of approval trend, using a local regression. The spread of gray around the line indicates how much variation there is across polls taken at the same time.
The vertical grid marks quarters, with January 1 in a darker shade. Tic marks on the horizontal axis are months.
This graph is at 768 x 768 resolution. Some readers may need to click or double click on the graph to see it at full resolution.
