Frequencies for first 10,000 rows of ser_tr variable in vehicle dataset : VIN SERIES | TRUCK | Freq. Percent Cum. ------------+----------------------------------- | 7 0.07 0.07 *** | 6,360 63.60 63.67 10S | 1 0.01 63.68 200 | 2 0.02 63.70 20S | 1 0.01 63.71 30S | 3 0.03 63.74 4/5 | 1 0.01 63.75 400 | 1 0.01 63.76 40S | 23 0.23 63.99 44P | 10 0.10 64.09 450 | 2 0.02 64.11 550 | 1 0.01 64.12 600 | 35 0.35 64.47 620 | 2 0.02 64.49 700 | 2 0.02 64.51 70S | 2 0.02 64.53 720 | 7 0.07 64.60 80S | 12 0.12 64.72 90S | 9 0.09 64.81 910 | 6 0.06 64.87 920 | 18 0.18 65.05 937 | 1 0.01 65.06 940 | 9 0.09 65.15 990 | 3 0.03 65.18 999 | 568 5.68 70.86 ARO | 4 0.04 70.90 AST | 8 0.08 70.98 AVL | 10 0.10 71.08 B20 | 1 0.01 71.09 B22 | 7 0.07 71.16 B23 | 3 0.03 71.19 B25 | 1 0.01 71.20 B26 | 4 0.04 71.24 B30 | 4 0.04 71.28 B40 | 3 0.03 71.31 BLK | 1 0.01 71.32 BRO | 3 0.03 71.35 BVN | 2 0.02 71.37 C10 | 23 0.23 71.60 C15 | 8 0.08 71.68 C20 | 6 0.06 71.74 C25 | 4 0.04 71.78 C30 | 1 0.01 71.79 C35 | 1 0.01 71.80 C65 | 1 0.01 71.81 C6M | 1 0.01 71.82 C6V | 3 0.03 71.85 C75 | 2 0.02 71.87 CAL | 15 0.15 72.02 CAN | 2 0.02 72.04 CAR | 2 0.02 72.06 CHA | 4 0.04 72.10 CHK | 39 0.39 72.49 CLU | 1 0.01 72.50 CMD | 1 0.01 72.51 CNV | 5 0.05 72.56 COE | 17 0.17 72.73 COF | 319 3.19 75.92 COL | 4 0.04 75.96 COM | 2 0.02 75.98 CON | 396 3.96 79.94 CSR | 5 0.05 79.99 CTV | 22 0.22 80.21 CVS | 4 0.04 80.25 CWS | 1 0.01 80.26 D10 | 2 0.02 80.28 D15 | 4 0.04 80.32 D21 | 9 0.09 80.41 D30 | 1 0.01 80.42 D51 | 1 0.01 80.43 D95 | 1 0.01 80.44 DAK | 62 0.62 81.06 DEN | 8 0.08 81.14 DIS | 7 0.07 81.21 DRW | 28 0.28 81.49 E/D | 1 0.01 81.50 ECO | 6 0.06 81.56 ENV | 13 0.13 81.69 EPR | 1 0.01 81.70 ESC | 2 0.02 81.72 ETV | 2 0.02 81.74 EXP | 10 0.10 81.84 FCC | 1 0.01 81.85 FE6 | 2 0.02 81.87 FE8 | 1 0.01 81.88 FM2 | 7 0.07 81.95 FRR | 1 0.01 81.96 FRT | 44 0.44 82.40 GCK | 94 0.94 83.34 GM4 | 176 1.76 85.10 HFD | 1 0.01 85.11 HFE | 1 0.01 85.12 HOM | 1 0.01 85.13 HTL | 2 0.02 85.15 HTP | 40 0.40 85.55 HUM | 6 0.06 85.61 J/E | 1 0.01 85.62 JEE | 6 0.06 85.68 JMY | 14 0.14 85.82 K10 | 3 0.03 85.85 K15 | 6 0.06 85.91 K20 | 2 0.02 85.93 K25 | 1 0.01 85.94 K30 | 1 0.01 85.95 LIB | 13 0.13 86.08 LR3 | 1 0.01 86.09 MCV | 6 0.06 86.15 MHC | 3 0.03 86.18 MHV | 5 0.05 86.23 MMX | 5 0.05 86.28 MNS | 1 0.01 86.29 MRK | 2 0.02 86.31 MRM | 1 0.01 86.32 NPR | 10 0.10 86.42 NQR | 3 0.03 86.45 P30 | 5 0.05 86.50 PUP | 2 0.02 86.52 PYS | 1 0.01 86.53 R/V | 3 0.03 86.56 R10 | 1 0.01 86.57 R25 | 1 0.01 86.58 R35 | 1 0.01 86.59 R50 | 3 0.03 86.62 RID | 1 0.01 86.63 RMV | 10 0.10 86.73 RNG | 158 1.58 88.31 RPC | 192 1.92 90.23 RRV | 1 0.01 90.24 S | 85 0.85 91.09 S/V | 13 0.13 91.22 S10 | 1 0.01 91.23 S15 | 7 0.07 91.30 SAF | 18 0.18 91.48 SAV | 2 0.02 91.50 SCT | 1 0.01 91.51 SIE | 113 1.13 92.64 SIL | 220 2.20 94.84 SON | 17 0.17 95.01 SPO | 1 0.01 95.02 SPR | 1 0.01 95.03 SPT | 1 0.01 95.04 SRW | 101 1.01 96.05 SS | 4 0.04 96.09 STE | 11 0.11 96.20 STV | 4 0.04 96.24 T10 | 10 0.10 96.34 T7F | 1 0.01 96.35 TAC | 104 1.04 97.39 TOP | 2 0.02 97.41 TRK | 21 0.21 97.62 TSR | 1 0.01 97.63 TTN | 11 0.11 97.74 TUN | 53 0.53 98.27 UDS | 3 0.03 98.30 UHT | 9 0.09 98.39 UPL | 1 0.01 98.40 VAN | 35 0.35 98.75 VMX | 1 0.01 98.76 VOF | 1 0.01 98.77 VVN | 39 0.39 99.16 VWG | 1 0.01 99.17 W/T | 17 0.17 99.34 W/Y | 8 0.08 99.42 W15 | 2 0.02 99.44 W20 | 4 0.04 99.48 WAG | 2 0.02 99.50 WCN | 5 0.05 99.55 WIN | 1 0.01 99.56 WLC | 2 0.02 99.58 WRA | 1 0.01 99.59 X44 | 3 0.03 99.62 XCB | 4 0.04 99.66 XPD | 4 0.04 99.70 YUK | 30 0.30 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016