651
669
groups = group_by_field(mapping, field)
652
670
outfile = open(path.join(path_prefix,
654
672
outfile.write('\t'.join(['Category_1a','Category_1b','Avg',\
655
673
'Category_2a','Category_2b','Avg','t','p',\
656
674
'p_greater','p_less','Iterations\n']))