PROC FORMAT, VALUE VFMT LOW-<80=C 80-<90=B 90-HIGH=A‘; dATA B SET SASUSER SCORE V=MEANOF TI-T3) PROC FREQ DATA=B FORMATⅤⅤFMT; TABLES V2 PROC FORMAT ; VALUE VFMT LOW-<80='C' 80-<90='B' 90-HIGH='A‘ ; DATA B; SET SASUSER.SCORE; V=MEAN(OF T1-T3) ; PROC FREQ DATA=B ; FORMAT V VFMT. ; TABLES V;