yogi_TroubleShoot Why Getting Different Results Using COUNTIF And SUBTOTAL Functions

                                          Google Spreadsheet   Post  #1328
Yogi Anand, D.Eng, P.E.      ANAND Enterprises LLC -- Rochester Hills MI     www.energyefficientbuild.com.   Aug, 12 2013
user dakers (http://productforums.google.com/forum/?zx=7udaj0vehrz6#!category-topic/docs/spreadsheets/7wk2WroRAzY)
Countif results different than Filter results
I have a very simple Google Spreadsheet with a summary page that adds up the possible responses from a calling campaign.

The first tab is the data and the second tab is a summary.

The formula in the second contact type summary (cell B6) is: 

=countif('Sample Data'!$C:$C,"="&A6)
The results of this formula is 159
However, if you filter the "Sample Data" tab on column "C" and select "Interaction" you get 167

It seems the "countif" is getting the wrong total.  The next row is wrong as well with "Left Voice Message" showing 77 using the Countif formula and actually there are 78 that match that in the Sample Data.

Any ideas?

Here is the link to the "Countif Error Example" Google Spreadsheet (shared with anyone who has the link)

https://docs.google.com/spreadsheet/ccc?key=0Al-CHd_2uX1PdEM5U2I3VDlXbmswMFBpSTNrMGxEQmc&usp=sharing

All proprietary data has been removed. 
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