Frequencies for first 10,000 rows of vin_bt variable in person dataset : vin_bt | Freq. Percent Cum. ------------+----------------------------------- | 660 6.60 6.60 2D | 122 1.22 7.82 2H | 246 2.46 10.28 2L | 21 0.21 10.49 2P | 18 0.18 10.67 2T | 18 0.18 10.85 2W | 25 0.25 11.10 3C | 79 0.79 11.89 3D | 5 0.05 11.94 3P | 8 0.08 12.02 4C | 265 2.65 14.67 4D | 2,558 25.58 40.25 4H | 51 0.51 40.76 4P | 40 0.40 41.16 4T | 4 0.04 41.20 4W | 202 2.02 43.22 99 | 445 4.45 47.67 AT | 12 0.12 47.79 BU | 117 1.17 48.96 CB | 44 0.44 49.40 CC | 52 0.52 49.92 CG | 20 0.20 50.12 CM | 1 0.01 50.13 CP | 647 6.47 56.60 CV | 68 0.68 57.28 CW | 148 1.48 58.76 DP | 1 0.01 58.77 DS | 316 3.16 61.93 EC | 9 0.09 62.02 ES | 7 0.07 62.09 EV | 6 0.06 62.15 FC | 3 0.03 62.18 GL | 2 0.02 62.20 HT | 1 0.01 62.21 IC | 83 0.83 63.04 IE | 6 0.06 63.10 LB | 1 0.01 63.11 MH | 3 0.03 63.14 MP | 1 0.01 63.15 MS | 3 0.03 63.18 MX | 1 0.01 63.19 MY | 28 0.28 63.47 PC | 406 4.06 67.53 PK | 820 8.20 75.73 PS | 103 1.03 76.76 RS | 344 3.44 80.20 RT | 4 0.04 80.24 S2 | 2 0.02 80.26 SN | 1 0.01 80.27 SV | 475 4.75 85.02 SW | 283 2.83 87.85 TB | 23 0.23 88.08 TL | 12 0.12 88.20 TM | 87 0.87 89.07 UT | 1,021 10.21 99.28 VN | 45 0.45 99.73 VW | 2 0.02 99.75 YY | 25 0.25 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016