Is it possible to have Excel do conditional formatting of a cell based on the
reults of a different cell?

For example, I have a column of data that give the averages of several
numbers in a row. I would like to have those averages change color if the
stadard deviation of those numbers is above a certian value. Is it possible
to do this within the conditional formatting menu option or is there some way
to link it to another column where I have the standard deviation calculated?