Try:

=SUM((A2:A5="Mon")*(B2:B5))/COUNTIF(A2:A5,"Mon")

Array entered with Ctrl + Shift + Enter

--
HTH

Sandy
In Perth, the ancient capital of Scotland
and the crowning place of kings


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"terri" wrote in message
...
I'd like to be able to calculate the average based on a weekday to get a
runrate by day, but I'm having trouble -- below is an example

Weekday Amount
Mon 10
Tues 20
Mon 20
Tues 30

Mon -- I'd like a formula that would return a value of 15(the
(10+20)/2)

Can anyone help???

Thx