Ben,

Assuming data in your example is in rows 1 to 3, colums A to G

=SUMPRODUCT(--($A$1:$G$1="Amy"),--($A$2:$G$2),--($A$3:$G$3))

HTH

"Ben010" wrote:

I want to do a SUMPRODUCT of 2 arrays but only if the elements in the array
meet a criteria established by a thrid array. For example, consider the
three arrays, where the top array is names, the second array is salary and
the third is a percentage:
Amy Sam Tim Bob Tim Amy Bob
200 300 100 300 100 200 300
.4 .3 .2 .2 .1 .1 .5
I want to be able to end up with a sumproduct associated with each name.
Thus IF "Amy" SUMPRODUCT=100, IF "Tim" SUMPRODUCT=210 and so on.