Frequencies for first 10,000 rows of drugres3 variable in person dataset : Drug Test- | Result (3) | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,731 97.31 97.31 1 | 3 0.03 97.34 95 | 1 0.01 97.35 128 | 2 0.02 97.37 151 | 2 0.02 97.39 155 | 3 0.03 97.42 157 | 1 0.01 97.43 167 | 3 0.03 97.46 177 | 5 0.05 97.51 187 | 1 0.01 97.52 189 | 9 0.09 97.61 300 | 11 0.11 97.72 302 | 1 0.01 97.73 304 | 3 0.03 97.76 316 | 3 0.03 97.79 321 | 9 0.09 97.88 337 | 1 0.01 97.89 343 | 3 0.03 97.92 348 | 3 0.03 97.95 351 | 13 0.13 98.08 352 | 2 0.02 98.10 367 | 1 0.01 98.11 376 | 2 0.02 98.13 387 | 1 0.01 98.14 401 | 5 0.05 98.19 402 | 7 0.07 98.26 407 | 8 0.08 98.34 410 | 6 0.06 98.40 417 | 12 0.12 98.52 423 | 3 0.03 98.55 513 | 1 0.01 98.56 515 | 1 0.01 98.57 600 | 11 0.11 98.68 603 | 1 0.01 98.69 605 | 4 0.04 98.73 606 | 32 0.32 99.05 695 | 23 0.23 99.28 996 | 72 0.72 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016