Correction to previous post
 

An AVERAGEIF function may help you. Example: A1:A100 contains the job titles
with duplicates, B1:B100 contains the salaries. You could put all of the job
titles in column C starting with C1, just once, no duplicates, sort them
alphabetically. Then in column D1 put the formula
=AVERAGEIF($A$1:$A$100,C1,$B$1:$B$100) and drag the formula down so that
there is a
formula in each cell in column D for every entry in column C. You will get a
"Formula omits adjacent cells error" for the formulas. Just clear the error
as it's meaningless in this case.