Add graph line to chart

Giganews Newsgroups
Subject: Add graph line to chart
Posted by:  Wanna Learn
Date: Mon, 6 Aug 2007


I My graph shows the average number of
sales for each month
the standard is 62.1% per month. I need to show a line  going across the
chart to compare how the person did to the standard of 62.1%.  How do I do
this?  I tried my best to explain my question ...