You can change the transparency of markers (points) on a graph. For example, this enables you to control the visibility of overlapping points.
Note: When the drawing speed is set to Fast, the default marker transparency is applied. See Work with Crowded Markers.
1. In a graph, right-click anywhere and select Transparency. In a histogram, right-click the box plot area on the right and select Transparency.
2. Enter the level of transparency that you want the markers (points) to have on the graph, and click OK.
A value of 1 indicates total opaqueness and 0 indicates invisibility. Values between 1 and 0 are semi-transparent.