I think you might have to click on every sheet:

=AVERAGE('Agent 2'!B2,'Agent 1'!B2) etc

"Gary" wrote:

hi all,

I have 17 sheets, the 17th one is the Summary sheet. Now in the cell B2 of
the 17th sheet I want to calculate the average of the cells B2 in all the 16
sheets, what will be the easiest way to do it? the sheet tabs are named as
Agent 1.......Agent 16.

is it something like =AVERAGE(Agent 1:Agent 16,B2)


Thanks in advance for any help.