Frequencies for first 10,000 rows of drugres3 variable in person dataset : Drug Test- | Result (3) | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,446 94.46 94.46 1 | 178 1.78 96.24 95 | 156 1.56 97.80 136 | 1 0.01 97.81 155 | 1 0.01 97.82 167 | 3 0.03 97.85 177 | 3 0.03 97.88 178 | 1 0.01 97.89 187 | 1 0.01 97.90 188 | 2 0.02 97.92 189 | 6 0.06 97.98 208 | 2 0.02 98.00 295 | 1 0.01 98.01 304 | 5 0.05 98.06 321 | 3 0.03 98.09 337 | 1 0.01 98.10 348 | 1 0.01 98.11 351 | 7 0.07 98.18 352 | 2 0.02 98.20 367 | 2 0.02 98.22 387 | 1 0.01 98.23 401 | 7 0.07 98.30 402 | 3 0.03 98.33 407 | 3 0.03 98.36 410 | 3 0.03 98.39 417 | 12 0.12 98.51 433 | 1 0.01 98.52 495 | 1 0.01 98.53 513 | 2 0.02 98.55 515 | 1 0.01 98.56 600 | 3 0.03 98.59 603 | 7 0.07 98.66 605 | 4 0.04 98.70 606 | 30 0.30 99.00 695 | 12 0.12 99.12 702 | 2 0.02 99.14 795 | 1 0.01 99.15 996 | 57 0.57 99.72 997 | 1 0.01 99.73 999 | 27 0.27 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016