How to sum only positive or negative values in Excel?

Soldato
Joined
16 Jul 2004
Posts
14,075
Consider I have a list as follows, in Excel 2007:

3
8
-5
5
-1

What formula can I use to sum this list to 16 (3+8+5)? Effectively, how do I sum only positive or negative values in Excel?

Thanks in advance :)
 
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