Quote Originally Posted by cmpgeek

i just cant figure out why when i click anywhere on that chart it outlines the data sources and allows me to manipulate them that way, but on other graphs the only way to see the outlines is to click directly on the data points, and then i still have to right click and choose SOURCE DATA so i can change the range that appears...
I am thinking that it might have to do with split data sources. For instance, on your example, the data is all contained within the one block (even though it is separate from the column headings). Can you check and see whether the other graphs that do not allow this are split?

Or sometimes the data is set up using the Series tab rather than the Data Range tab. I think that those that are set up with Series tab do not respond the same as Data Range graphs.