Highlighting outliers

[Sean_OConnor]

Folks,

I notice in my dataset that there appears to be a few outliers which in turn can throw out headline figures. They appear to be related to keying errors. 

What I would like to do is include in my datastep an if statment that will mark an outlier with a Y if it 3 times higher than the average level of turnover in that sector. 

It would be something simple like this;

data i;
set m;
if NET_OPERATING_INCOME_1*(3)>mean_operating_income then outlier='Y';run; 

However, what this does is actually just multiply the variable net_operating_income *3 whereas I just want SAS to mark the observation with a Y anytime a value in net_operating_income_1 is 3 times larger then mean_operating_income.

Any input would be most welcome.

KInd regards,

Sean 

[RW9]

data i;
  set m;
  outlier=ifc(net_operating_income_1 > (mean_operating_income * 3),'Y','N');
run; 

You were nearly there - note I use the ifc function rather than if construct for brevity.