How can I auto update a graph?

[Bigxcr]

I was wondering if there is a way for me to auto update a chart that I am
using.

 

[Don Guillett]

Lot's of ways. The usual is to use a defined name for the series with an
offset formula to include row/columns

use a defined name such as =offset($a$1,0,0,counta($a:$a),4).
Go to these for more info

http://www.tushar-mehta.com/
http://peltiertech.com/

 

[Bernard Liengme]

I'd like to add to Don's fine answer: if you are using Excel 2003 and make
the data a List (Data | List -> Create List) then when more data is added to
the list, the chart automatically expands to include the new values.

best wishes