Hi, I'm sure this is a going to be a very stupid question, but I've tried searching Help and well...the Help function in MS Office 2007 ain't much help.I've plotted a scatter graph in Excel 2007 ...

Tick marks can make your spreadsheet easier to use. Microsoft Excel is a powerful financial software package, and that makes it a suitable choice for audit spreadsheets and similar documents.

The X-axis, which is the horizontal axis, on most Excel charts does not use numeric intervals like the vertical Y-axis does. ... Click on the text box next to "Interval between tick marks." ...