Frequencies for first 10,000 rows of ser_tr variable in vehicle dataset : vin truck | series | Freq. Percent Cum. ------------+----------------------------------- | 7,142 71.42 71.42 20S | 1 0.01 71.43 3/5 | 1 0.01 71.44 30S | 3 0.03 71.47 4/5 | 2 0.02 71.49 40S | 27 0.27 71.76 44P | 3 0.03 71.79 600 | 44 0.44 72.23 700 | 5 0.05 72.28 70S | 1 0.01 72.29 720 | 2 0.02 72.31 80S | 6 0.06 72.37 90S | 5 0.05 72.42 910 | 3 0.03 72.45 920 | 15 0.15 72.60 930 | 1 0.01 72.61 937 | 1 0.01 72.62 940 | 9 0.09 72.71 990 | 4 0.04 72.75 ACA | 7 0.07 72.82 ARO | 7 0.07 72.89 AST | 24 0.24 73.13 AVL | 25 0.25 73.38 B23 | 2 0.02 73.40 B25 | 2 0.02 73.42 B26 | 1 0.01 73.43 B30 | 3 0.03 73.46 B40 | 1 0.01 73.47 BRO | 1 0.01 73.48 BRT | 1 0.01 73.49 C/C | 1 0.01 73.50 C10 | 13 0.13 73.63 C15 | 7 0.07 73.70 C25 | 2 0.02 73.72 C30 | 1 0.01 73.73 C55 | 4 0.04 73.77 C60 | 1 0.01 73.78 C75 | 1 0.01 73.79 CAL | 15 0.15 73.94 CAN | 2 0.02 73.96 CAR | 36 0.36 74.32 CCH | 2 0.02 74.34 CHA | 5 0.05 74.39 CHK | 40 0.40 74.79 CMD | 1 0.01 74.80 CMP | 4 0.04 74.84 CNV | 8 0.08 74.92 COE | 7 0.07 74.99 COF | 279 2.79 77.78 COL | 8 0.08 77.86 CON | 291 2.91 80.77 CSC | 30 0.30 81.07 CSR | 6 0.06 81.13 CTV | 19 0.19 81.32 CVS | 1 0.01 81.33 CWS | 3 0.03 81.36 D10 | 1 0.01 81.37 D15 | 1 0.01 81.38 D20 | 3 0.03 81.41 D21 | 5 0.05 81.46 D51 | 1 0.01 81.47 DAK | 47 0.47 81.94 DEN | 3 0.03 81.97 DIS | 1 0.01 81.98 DRW | 26 0.26 82.24 E/X | 1 0.01 82.25 ECO | 7 0.07 82.32 ELC | 2 0.02 82.34 ENV | 15 0.15 82.49 EQU | 1 0.01 82.50 ESC | 2 0.02 82.52 ETV | 2 0.02 82.54 EXP | 18 0.18 82.72 FCC | 2 0.02 82.74 FEC | 1 0.01 82.75 FH1 | 1 0.01 82.76 FK6 | 1 0.01 82.77 FM2 | 8 0.08 82.85 FRT | 32 0.32 83.17 GCK | 100 1.00 84.17 GM4 | 89 0.89 85.06 HFE | 2 0.02 85.08 HIN | 5 0.05 85.13 HOM | 2 0.02 85.15 HTL | 1 0.01 85.16 HTP | 35 0.35 85.51 HUM | 5 0.05 85.56 J/E | 2 0.02 85.58 JEE | 1 0.01 85.59 JET | 1 0.01 85.60 JMY | 12 0.12 85.72 K10 | 6 0.06 85.78 K15 | 2 0.02 85.80 K20 | 2 0.02 85.82 K25 | 3 0.03 85.85 LIB | 27 0.27 86.12 LLN | 1 0.01 86.13 LR4 | 1 0.01 86.14 MCV | 8 0.08 86.22 MHC | 1 0.01 86.23 MHV | 4 0.04 86.27 MMX | 1 0.01 86.28 MON | 1 0.01 86.29 MRK | 3 0.03 86.32 NPR | 3 0.03 86.35 NQR | 2 0.02 86.37 P30 | 1 0.01 86.38 P52 | 1 0.01 86.39 PCC | 1 0.01 86.40 PRO | 23 0.23 86.63 PRT | 5 0.05 86.68 PUP | 2 0.02 86.70 R/V | 1 0.01 86.71 R10 | 2 0.02 86.73 R20 | 1 0.01 86.74 R30 | 1 0.01 86.75 RAI | 1 0.01 86.76 RID | 4 0.04 86.80 RMV | 5 0.05 86.85 RNG | 98 0.98 87.83 RPC | 194 1.94 89.77 RRV | 9 0.09 89.86 RSP | 6 0.06 89.92 S | 67 0.67 90.59 S/V | 9 0.09 90.68 S15 | 3 0.03 90.71 SAF | 7 0.07 90.78 SAV | 4 0.04 90.82 SIE | 94 0.94 91.76 SIL | 235 2.35 94.11 SNR | 2 0.02 94.13 SON | 9 0.09 94.22 SPR | 3 0.03 94.25 SRW | 84 0.84 95.09 SS | 4 0.04 95.13 STE | 11 0.11 95.24 STV | 3 0.03 95.27 SXD | 1 0.01 95.28 T10 | 4 0.04 95.32 T7F | 1 0.01 95.33 TAC | 117 1.17 96.50 TER | 3 0.03 96.53 TIG | 1 0.01 96.54 TOP | 1 0.01 96.55 TRA | 1 0.01 96.56 TRK | 21 0.21 96.77 TRL | 1 0.01 96.78 TRN | 2 0.02 96.80 TSP | 1 0.01 96.81 TTN | 15 0.15 96.96 TUN | 53 0.53 97.49 TWC | 19 0.19 97.68 UHT | 3 0.03 97.71 UPL | 1 0.01 97.72 V35 | 1 0.01 97.73 VAN | 26 0.26 97.99 VOF | 8 0.08 98.07 VTR | 12 0.12 98.19 VVN | 53 0.53 98.72 W/T | 24 0.24 98.96 W/Y | 8 0.08 99.04 W10 | 1 0.01 99.05 W20 | 2 0.02 99.07 WAG | 2 0.02 99.09 WCN | 3 0.03 99.12 WIN | 22 0.22 99.34 WRA | 11 0.11 99.45 WT5 | 1 0.01 99.46 WUL | 6 0.06 99.52 X44 | 1 0.01 99.53 XCB | 3 0.03 99.56 XPD | 2 0.02 99.58 XTS | 1 0.01 99.59 Y/D | 1 0.01 99.60 YUK | 40 0.40 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Oct 2016