"Shai Rachamim" <Shai wrote in message
...
What is the simplest way to plot a commulitive distribution function
graph? I
would like to add several graphs in one chart if possible.

If you know your statistics it's "cumulative distribution."
Ensure you data analysis addins are installed and active.
Descriptive statistics and Histogram are choices under Tools/Data
Analysis...
If you need help on charts for statistics see
http://peltiertech.com/Excel/Charts/statscharts.html
Here is a lesson in CDF charting in Excel
http://ardent.mit.edu/real_options/R...20Session2.pdf