Shatin,

SUMPRODUCT is a standard Excel function; it does not require any
add-in.


--
Cordially,
Chip Pearson
Microsoft MVP - Excel
Pearson Software Consulting, LLC
www.cpearson.com

"Shatin" wrote in message
...
I've been searching the web on the advantages of using array
formula vs
SUMPRODUCT. I have come across the following in my searches:

"The problem with SUMPRODUCT is that it is not a standard Excel
formula.

It relies upon an add-In, which is fine until someone doesn't
have that
particular add-in at which point it all turns to custard with
the beautiful
model you have built, and credibility hits rock bottom."

Is it true that SUMPRODUCT is not a standard Excel formula?