Yes you can; and the answer for both the questions are same..Make sure the
entries from the list are 'Yes' with out any spaces after..

The below will count cell c6 for Sheet1 and Sheet2. You can add more sheets
to the array like {"sheet1","sheet2","sheet3","sheet4"}
=SUMPRODUCT(COUNTIF(INDIRECT("'"& {"sheet1","sheet2"} &"'!C6"),"Yes"))

OR
you can type in the sheet names to a range of cells say from A1:A5 of the
current sheet. Make sure all 5 cells contain a valid sheet name
=SUMPRODUCT(COUNTIF(INDIRECT("'"& A1:A5 &"'!C6"),"Yes"))

If this post helps click Yes
---------------
Jacob Skaria


"Robin" wrote:

1st question: Is there a way to add the text say cell C6 across multiple
worksheets?
Ex. Either yes or no will be typed in cell C6 in multiple worksheets. Say
there are 8 worksheets and 5 say yes and 3 say no? I would like to determine
the number of cells that say yes without going back to count.

Also
2nd Question: Is there a way to add the text to cell C6 across multiple
worksheets if
there were a datavalidated list with a selection of yes or no with there
being 5 say yes and 3 say no? I would like to determine the number of cells
that say yes without going back to count.