data watertaxis;
input month$ degree gas;
datalines;
oct 15.6 5.2
nov 26.8 6.1
dec 37.8 8.7
jan 36.4 8.5
feb 35.5 8.8
mar 18.6 4.9
apr 15.3 4.5
may 7.9 2.5
jun 0.0 1.1
;
proc reg;
model gas=degree;
run;
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