OPTIONS LS=72;
TITLE 'EXAMPLE 1. SIMPLE LINEAR REGRESSION: SERVICE CALLS DATA';
DATA REPAIR;
INPUT X1 Y;
CARDS;
 1       23
 2       29
 3       49
 4       64
 4       74
 5       87
 6       96
 6       97
 7      109
 8      119
 9      149
 9      145
10      154
10      166
11      162
11      174
12      180
12      176
14      179
16      193
17      193
18      195
18      198
20      205
;
PROC REG DATA=REPAIR CORR;
VAR Y X1;
MODEL Y=X1/ADJRSQ R CLI CLM RMSE;
OUTPUT OUT=OUTFILE PREDICTED=YPRED RESIDUAL=YRES;
PLOT Y*X1;
PLOT RESIDUAL.*PREDICTED.;
PLOT RESIDUAL.*X1;
RUN;
PROC UNIVARIATE DATA=OUTFILE PLOT FREQ NORMAL;
VAR YRES;
RUN;