PROC IMPORT OUT= WORK.phones
            DATAFILE= "Z:\764-F11\data\phones.txt" 
            DBMS=TAB REPLACE;
     GETNAMES=YES;
     DATAROW=2; 
RUN;

PROC ROBUSTREG DATA=phones;
  MODEL Calls = Year;
RUN;

PROC ROBUSTREG DATA=phones METHOD=M(WF=Huber);
  MODEL Calls = Year;
RUN;

PROC IMPORT OUT= WORK.hills
            DATAFILE= "Z:\764-F11\data\hills.txt" 
            DBMS=TAB REPLACE;
     GETNAMES=YES;
     DATAROW=2; 
RUN;

PROC ROBUSTREG DATA=hills PLOTS=ALL;
  MODEL Time = Dist Climb;
RUN;