Frequencies for first 10,000 rows of ser_tr variable in vehicle dataset : VIN SERIES | TRUCK | Freq. Percent Cum. ------------+----------------------------------- | 18 0.18 0.18 *** | 6,331 63.31 63.49 10S | 2 0.02 63.51 200 | 1 0.01 63.52 3/4 | 2 0.02 63.54 30S | 4 0.04 63.58 350 | 1 0.01 63.59 4/5 | 1 0.01 63.60 40S | 22 0.22 63.82 44P | 18 0.18 64.00 500 | 1 0.01 64.01 550 | 1 0.01 64.02 590 | 1 0.01 64.03 600 | 39 0.39 64.42 620 | 1 0.01 64.43 700 | 1 0.01 64.44 720 | 7 0.07 64.51 80S | 7 0.07 64.58 90S | 20 0.20 64.78 910 | 5 0.05 64.83 920 | 23 0.23 65.06 940 | 7 0.07 65.13 990 | 2 0.02 65.15 999 | 552 5.52 70.67 ARO | 16 0.16 70.83 AST | 13 0.13 70.96 AVL | 10 0.10 71.06 B20 | 7 0.07 71.13 B22 | 7 0.07 71.20 B23 | 3 0.03 71.23 B25 | 3 0.03 71.26 B26 | 3 0.03 71.29 B30 | 3 0.03 71.32 B40 | 2 0.02 71.34 B7T | 1 0.01 71.35 BRO | 5 0.05 71.40 BUS | 1 0.01 71.41 BVN | 2 0.02 71.43 C/C | 1 0.01 71.44 C10 | 35 0.35 71.79 C15 | 14 0.14 71.93 C20 | 16 0.16 72.09 C25 | 5 0.05 72.14 C30 | 6 0.06 72.20 C50 | 1 0.01 72.21 C6M | 2 0.02 72.23 C6V | 5 0.05 72.28 C96 | 2 0.02 72.30 CAR | 2 0.02 72.32 CCH | 2 0.02 72.34 CGS | 1 0.01 72.35 CHA | 3 0.03 72.38 CHK | 60 0.60 72.98 CLT | 1 0.01 72.99 CLU | 1 0.01 73.00 CNV | 7 0.07 73.07 COE | 21 0.21 73.28 COF | 337 3.37 76.65 COH | 1 0.01 76.66 COL | 9 0.09 76.75 COM | 3 0.03 76.78 CON | 337 3.37 80.15 COU | 1 0.01 80.16 CSR | 8 0.08 80.24 CTS | 1 0.01 80.25 CTV | 27 0.27 80.52 CVS | 6 0.06 80.58 CWS | 8 0.08 80.66 D10 | 4 0.04 80.70 D15 | 3 0.03 80.73 D20 | 5 0.05 80.78 D21 | 20 0.20 80.98 D30 | 3 0.03 81.01 D51 | 3 0.03 81.04 D5I | 3 0.03 81.07 DAK | 69 0.69 81.76 DEN | 4 0.04 81.80 DIS | 8 0.08 81.88 DRW | 23 0.23 82.11 ECO | 5 0.05 82.16 ENV | 7 0.07 82.23 ESC | 2 0.02 82.25 ETV | 3 0.03 82.28 EXP | 6 0.06 82.34 FH2 | 2 0.02 82.36 FM6 | 1 0.01 82.37 FRR | 1 0.01 82.38 FRT | 27 0.27 82.65 FTR | 2 0.02 82.67 GCK | 68 0.68 83.35 GM4 | 194 1.94 85.29 HFE | 2 0.02 85.31 HOM | 2 0.02 85.33 HTL | 5 0.05 85.38 HTP | 70 0.70 86.08 INT | 1 0.01 86.09 J/E | 3 0.03 86.12 JEE | 4 0.04 86.16 JMY | 17 0.17 86.33 K10 | 20 0.20 86.53 K15 | 10 0.10 86.63 K20 | 3 0.03 86.66 K25 | 2 0.02 86.68 KOD | 3 0.03 86.71 KOM | 1 0.01 86.72 LB1 | 2 0.02 86.74 LCH | 2 0.02 86.76 LIB | 11 0.11 86.87 LLN | 1 0.01 86.88 MCV | 16 0.16 87.04 MHC | 1 0.01 87.05 MHV | 6 0.06 87.11 MMX | 4 0.04 87.15 MRM | 3 0.03 87.18 NPR | 9 0.09 87.27 P20 | 1 0.01 87.28 P30 | 5 0.05 87.33 P42 | 2 0.02 87.35 PCC | 2 0.02 87.37 PUP | 2 0.02 87.39 PYS | 2 0.02 87.41 R/V | 5 0.05 87.46 R10 | 2 0.02 87.48 R15 | 2 0.02 87.50 R30 | 1 0.01 87.51 R35 | 1 0.01 87.52 R50 | 1 0.01 87.53 RAN | 2 0.02 87.55 RIV | 1 0.01 87.56 RMV | 18 0.18 87.74 RNG | 191 1.91 89.65 RPC | 149 1.49 91.14 RRV | 5 0.05 91.19 S | 126 1.26 92.45 S/V | 18 0.18 92.63 S15 | 5 0.05 92.68 SAF | 18 0.18 92.86 SAV | 1 0.01 92.87 SIE | 115 1.15 94.02 SIL | 135 1.35 95.37 SON | 22 0.22 95.59 SPT | 1 0.01 95.60 SRW | 73 0.73 96.33 SS | 4 0.04 96.37 SSE | 1 0.01 96.38 STE | 5 0.05 96.43 SYC | 1 0.01 96.44 T10 | 10 0.10 96.54 TAC | 72 0.72 97.26 TNS | 2 0.02 97.28 TOP | 1 0.01 97.29 TRK | 48 0.48 97.77 TSR | 2 0.02 97.79 TUN | 28 0.28 98.07 UDS | 5 0.05 98.12 UHT | 1 0.01 98.13 V10 | 1 0.01 98.14 V25 | 1 0.01 98.15 VAN | 54 0.54 98.69 VFE | 1 0.01 98.70 VVN | 25 0.25 98.95 VWG | 3 0.03 98.98 W/T | 15 0.15 99.13 W/Y | 13 0.13 99.26 W10 | 3 0.03 99.29 W15 | 5 0.05 99.34 W20 | 6 0.06 99.40 W30 | 1 0.01 99.41 WCN | 9 0.09 99.50 WHC | 1 0.01 99.51 WIN | 2 0.02 99.53 WRA | 3 0.03 99.56 WT5 | 1 0.01 99.57 X44 | 4 0.04 99.61 XCB | 6 0.06 99.67 XPD | 8 0.08 99.75 YUK | 25 0.25 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016