Frequencies for first 10,000 rows of vin_bt variable in vehicle dataset : VIN Body | Type | Freq. Percent Cum. ------------+----------------------------------- | 626 6.26 6.26 2D | 38 0.38 6.64 2H | 141 1.41 8.05 2L | 10 0.10 8.15 2P | 11 0.11 8.26 2T | 1 0.01 8.27 2W | 46 0.46 8.73 3C | 54 0.54 9.27 3D | 1 0.01 9.28 3P | 13 0.13 9.41 4B | 3 0.03 9.44 4C | 327 3.27 12.71 4D | 2,809 28.09 40.80 4H | 82 0.82 41.62 4L | 1 0.01 41.63 4P | 13 0.13 41.76 4W | 264 2.64 44.40 5D | 4 0.04 44.44 AT | 27 0.27 44.71 BU | 24 0.24 44.95 C4 | 10 0.10 45.05 CB | 47 0.47 45.52 CC | 71 0.71 46.23 CG | 42 0.42 46.65 CH | 4 0.04 46.69 CP | 472 4.72 51.41 CV | 107 1.07 52.48 CW | 437 4.37 56.85 DP | 1 0.01 56.86 DS | 431 4.31 61.17 EC | 14 0.14 61.31 EN | 10 0.10 61.41 ES | 81 0.81 62.22 EV | 1 0.01 62.23 GG | 2 0.02 62.25 GL | 2 0.02 62.27 IC | 24 0.24 62.51 IE | 5 0.05 62.56 IN | 1 0.01 62.57 LB | 20 0.20 62.77 LL | 1 0.01 62.78 LM | 2 0.02 62.80 MH | 3 0.03 62.83 MP | 3 0.03 62.86 MS | 7 0.07 62.93 MX | 7 0.07 63.00 MY | 2 0.02 63.02 PC | 274 2.74 65.76 PK | 505 5.05 70.81 PS | 67 0.67 71.48 RC | 52 0.52 72.00 RD | 10 0.10 72.10 RS | 865 8.65 80.75 RT | 8 0.08 80.83 S1 | 1 0.01 80.84 S2 | 4 0.04 80.88 SV | 327 3.27 84.15 SW | 94 0.94 85.09 T | 5 0.05 85.14 TB | 21 0.21 85.35 TL | 13 0.13 85.48 TM | 51 0.51 85.99 UT | 1,370 13.70 99.69 VN | 12 0.12 99.81 YY | 19 0.19 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016