I keep getting a no valid observations error. My code works when I only have 2 variables but anymore than that and SAS doesn't know what to do. What am I doing wrong? data totalHeight; input FFD SPR RGF PLF SLF; datalines; 82 1.468 3.30 0.166 0.10 89 1.605 3.64 0.154 0.10 101 2.168 4.87 0.177 2.90 107 2.054 4.72 0.275 1.10 115 2.467 4.11 0.298 1.00 122 1.294 3.75 0.150 0.90 127 2.183 3.97 0.000 2.40 137 2.426 4.65 0.117 1.80 147 2.607 3.84 0.155 2.30 166 4.567 4.92 0.138 3.20 174 4.588 3.82 0.249 3.50 175 3.618 4.32 0.143 2.80 177 5.855 4.53 0.172 2.50 184 2.898 4.48 0.178 3.00 187 3.880 5.39 0.101 3.00 189 0.455 4.99 0.008 2.64 194 8.088 4.50 0.251 2.70 197 6.502 5.20 0.366 2.90 201 6.081 5.65 0.106 2.90 204 7.105 5.40 0.089 3.20 255 8.548 4.20 0.222 2.90 328 6.321 6.45 0.187 2.00 ; proc reg data=totalHeight; model FFD=SPR RGF PLF SLF/selection=stepwise; run;
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