libname data "M:\General Research Directory\171-161\Data";

PROC REG DATA = data.tips;
MODEL Tip = TotBill;
RUN;

DATA tips2;
SET data.tips;
	TipRate = 100*Tip/TotBill;
run;

PROC SGPLOT DATA = tips2;
	HISTOGRAM TipRate;
RUN;

DATA tips3;
SET tips2;
BigTip = TipRate > 20;
RUN;