Can' use COUNTIF

=SUMPRODUCT(--(A2:A100="value1"),--(B2:B100=17))

to sum use

=SUMPRODUCT(--(A2:A100="value1"),--(B2:B100=17),C2:C100)

--
HTH

Bob Phillips

"andreah" wrote in message
...
How do I count occurrences of multiple values by using the Count If
formula.
The help page stated that I could assisgn a value of 1 with IF functions
but
I don't know how to do this. I have three columns, one with cost, one
with
number of people and one with airline. I want to count the cost and the
number of people for each airline, and group some airlines together. E.g.
cost and number of people for airline 1 and airline two. Cost and number
of
people for airline not specified. Any ideas? Thanks Andrea