Frequencies for first 10,000 rows of vin_bt variable in vehicle dataset : VIN Body | Type | Freq. Percent Cum. ------------+----------------------------------- | 582 5.82 5.82 2D | 46 0.46 6.28 2H | 205 2.05 8.33 2T | 8 0.08 8.41 2W | 52 0.52 8.93 3C | 56 0.56 9.49 3P | 15 0.15 9.64 4B | 5 0.05 9.69 4C | 304 3.04 12.73 4D | 2,669 26.69 39.42 4H | 100 1.00 40.42 4W | 276 2.76 43.18 5D | 4 0.04 43.22 AT | 31 0.31 43.53 BU | 12 0.12 43.65 C4 | 9 0.09 43.74 CB | 43 0.43 44.17 CC | 138 1.38 45.55 CG | 54 0.54 46.09 CH | 4 0.04 46.13 CL | 1 0.01 46.14 CP | 494 4.94 51.08 CV | 126 1.26 52.34 CW | 458 4.58 56.92 EC | 27 0.27 57.19 EN | 14 0.14 57.33 ES | 159 1.59 58.92 GG | 1 0.01 58.93 GL | 1 0.01 58.94 HR | 1 0.01 58.95 IC | 21 0.21 59.16 LL | 1 0.01 59.17 MH | 5 0.05 59.22 MS | 9 0.09 59.31 MX | 8 0.08 59.39 PC | 328 3.28 62.67 PK | 507 5.07 67.74 PS | 1 0.01 67.75 RC | 422 4.22 71.97 RD | 6 0.06 72.03 RS | 598 5.98 78.01 SN | 2 0.02 78.03 SP | 4 0.04 78.07 SV | 220 2.20 80.27 SW | 88 0.88 81.15 T | 21 0.21 81.36 TB | 35 0.35 81.71 TM | 1 0.01 81.72 TR | 466 4.66 86.38 UT | 1,333 13.33 99.71 VN | 1 0.01 99.72 YY | 28 0.28 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016