Field Calculator Python expression

Discussion created by wgivens on Feb 28, 2012
Latest reply on Feb 29, 2012 by wgivens
Was wondering if anybody out there could get me out of a quick bind.

I want to calculate a field (norm_yld) that is a normalized version of field [yield].  I would normally get the mean of the [yield] column and calculate the [norm_yld] by ([yield]/mean)*100.  How would I do this in using the Python parser in the Fied Calculator?