Frequencies for first 10,000 rows of vin_bt variable in vehicle dataset : VIN Body | Type | Freq. Percent Cum. ------------+----------------------------------- | 171 1.71 1.71 2D | 466 4.66 6.37 2F | 17 0.17 6.54 2H | 514 5.14 11.68 2L | 67 0.67 12.35 2P | 10 0.10 12.45 2T | 582 5.82 18.27 3D | 79 0.79 19.06 4D | 1,207 12.07 31.13 4H | 149 1.49 32.62 4L | 10 0.10 32.72 4P | 48 0.48 33.20 4T | 87 0.87 34.07 5D | 1 0.01 34.08 99 | 1,198 11.98 46.06 AT | 7 0.07 46.13 BU | 7 0.07 46.20 CB | 117 1.17 47.37 CC | 53 0.53 47.90 CP | 1,112 11.12 59.02 CV | 70 0.70 59.72 CY | 7 0.07 59.79 DP | 2 0.02 59.81 DS | 158 1.58 61.39 EN | 4 0.04 61.43 FB | 5 0.05 61.48 FC | 7 0.07 61.55 GL | 6 0.06 61.61 HB | 33 0.33 61.94 HT | 5 0.05 61.99 IC | 1 0.01 62.00 LB | 20 0.20 62.20 LL | 13 0.13 62.33 MH | 1 0.01 62.34 MK | 2 0.02 62.36 MM | 3 0.03 62.39 MS | 27 0.27 62.66 MX | 9 0.09 62.75 MY | 8 0.08 62.83 NB | 19 0.19 63.02 PK | 1,742 17.42 80.44 PN | 1 0.01 80.45 RD | 12 0.12 80.57 RS | 702 7.02 87.59 RT | 23 0.23 87.82 SD | 80 0.80 88.62 SN | 6 0.06 88.68 ST | 1 0.01 88.69 SV | 86 0.86 89.55 SW | 409 4.09 93.64 T | 3 0.03 93.67 TB | 50 0.50 94.17 TL | 69 0.69 94.86 TM | 48 0.48 95.34 UT | 268 2.68 98.02 VC | 1 0.01 98.03 VN | 194 1.94 99.97 XT | 1 0.01 99.98 YY | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016