/* F-tests (wald) using PROC REG */
proc reg data=sashelp.cars;
model invoice = enginesize cylinders horsepower mpg_city;
test horsepower = 0;
test enginesize + 2*cylinders = 0;
test horsepower = 0, enginesize + 2*cylinders = 0;
run;quit;



/* Wald and/or LM tests using PROC MODEL */
proc model data=sashelp.cars;
parms b0 b_engine b_cylinders b_horse b_mpg;
invoice = b0 + b_engine*enginesize + b_cylinders*cylinders +
		  b_horse*horsepower + b_mpg*mpg_city;
fit invoice / ols;
test b_horse = 0, / wald lm ;
test b_engine + 2*b_cylinders = 0, / wald lm;
test b_horse = 0, b_engine + 2*b_cylinders = 0, /wald lm;
run;quit;