The Help function in Excel only provides an example of a formula that
excludes "0" values in a contiguous column. I am trying to figure out how to
write the formula that would average a group of numbers in a non-contiguous
column while ignoring any "0" values. See example of column below (assume
column cells are A1:A11 for example):

34
0
33

25
34
19

0
26
40