I need assistance with the following excel formula in cell f3
If (and b3, c3) b3-c3)
The intent is - Do only if there is a value in both b3 and c3
This formula would be copied down to the full column and then the values in the column would be averaged. I do not want to average values in that came from rows that did not have data in both columns B and C.
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=IF(COUNT(B3:C3)=2,B3-C3,"