Frequencies for first 10,000 rows of ser_tr variable in vehicle dataset : VIN SERIES | TRUCK | Freq. Percent Cum. ------------+----------------------------------- | 3 0.03 0.03 *** | 6,281 62.81 62.84 150 | 1 0.01 62.85 200 | 3 0.03 62.88 20S | 2 0.02 62.90 250 | 1 0.01 62.91 300 | 1 0.01 62.92 30S | 2 0.02 62.94 400 | 2 0.02 62.96 40S | 4 0.04 63.00 44P | 50 0.50 63.50 600 | 31 0.31 63.81 620 | 12 0.12 63.93 700 | 2 0.02 63.95 720 | 57 0.57 64.52 80S | 4 0.04 64.56 830 | 2 0.02 64.58 90S | 31 0.31 64.89 930 | 5 0.05 64.94 937 | 1 0.01 64.95 999 | 868 8.68 73.63 A10 | 1 0.01 73.64 ARO | 17 0.17 73.81 AST | 14 0.14 73.95 B20 | 13 0.13 74.08 B22 | 19 0.19 74.27 B26 | 4 0.04 74.31 BRO | 4 0.04 74.35 BUS | 1 0.01 74.36 C10 | 133 1.33 75.69 C15 | 28 0.28 75.97 C20 | 41 0.41 76.38 C25 | 16 0.16 76.54 C30 | 20 0.20 76.74 C35 | 9 0.09 76.83 C50 | 1 0.01 76.84 C60 | 4 0.04 76.88 C65 | 2 0.02 76.90 C6M | 1 0.01 76.91 C6V | 14 0.14 77.05 C96 | 24 0.24 77.29 C97 | 5 0.05 77.34 CAB | 1 0.01 77.35 CAR | 2 0.02 77.37 CCH | 6 0.06 77.43 CGS | 4 0.04 77.47 CHA | 1 0.01 77.48 CHK | 24 0.24 77.72 CLT | 2 0.02 77.74 CNV | 4 0.04 77.78 COE | 78 0.78 78.56 COF | 358 3.58 82.14 COL | 22 0.22 82.36 COM | 2 0.02 82.38 CON | 211 2.11 84.49 COU | 1 0.01 84.50 CTS | 12 0.12 84.62 CTV | 16 0.16 84.78 CVS | 6 0.06 84.84 D10 | 10 0.10 84.94 D15 | 16 0.16 85.10 D20 | 9 0.09 85.19 D21 | 68 0.68 85.87 D30 | 10 0.10 85.97 D5I | 10 0.10 86.07 DAK | 31 0.31 86.38 DC9 | 1 0.01 86.39 DH9 | 2 0.02 86.41 ELC | 1 0.01 86.42 EUR | 1 0.01 86.43 F60 | 1 0.01 86.44 F95 | 1 0.01 86.45 FCC | 1 0.01 86.46 FE4 | 2 0.02 86.48 FFE | 1 0.01 86.49 FK4 | 1 0.01 86.50 FLS | 2 0.02 86.52 FSR | 1 0.01 86.53 FTR | 1 0.01 86.54 GEO | 1 0.01 86.55 GM4 | 141 1.41 87.96 H95 | 3 0.03 87.99 HFB | 1 0.01 88.00 HFD | 1 0.01 88.01 HFE | 1 0.01 88.02 HFF | 1 0.01 88.03 HLX | 2 0.02 88.05 HTC | 6 0.06 88.11 HTP | 183 1.83 89.94 INT | 4 0.04 89.98 J95 | 5 0.05 90.03 JEE | 29 0.29 90.32 JET | 2 0.02 90.34 JIM | 1 0.01 90.35 K10 | 40 0.40 90.75 K15 | 22 0.22 90.97 K20 | 6 0.06 91.03 K25 | 2 0.02 91.05 K30 | 3 0.03 91.08 K35 | 1 0.01 91.09 KOD | 1 0.01 91.10 LB1 | 1 0.01 91.11 LDS | 1 0.01 91.12 LLN | 1 0.01 91.13 LTC | 6 0.06 91.19 LUM | 1 0.01 91.20 M95 | 2 0.02 91.22 MC2 | 1 0.01 91.23 MCV | 2 0.02 91.25 MHC | 2 0.02 91.27 MHV | 16 0.16 91.43 MMX | 15 0.15 91.58 MRM | 2 0.02 91.60 MXV | 3 0.03 91.63 N12 | 1 0.01 91.64 NAV | 2 0.02 91.66 NC9 | 1 0.01 91.67 NPR | 3 0.03 91.70 NRR | 1 0.01 91.71 P20 | 1 0.01 91.72 P30 | 11 0.11 91.83 P42 | 1 0.01 91.84 P52 | 2 0.02 91.86 P62 | 5 0.05 91.91 P65 | 1 0.01 91.92 PAR | 1 0.01 91.93 PCC | 7 0.07 92.00 PUP | 11 0.11 92.11 PYS | 2 0.02 92.13 R/V | 6 0.06 92.19 R10 | 2 0.02 92.21 R15 | 4 0.04 92.25 R20 | 1 0.01 92.26 R25 | 1 0.01 92.27 R30 | 1 0.01 92.28 R35 | 4 0.04 92.32 R50 | 10 0.10 92.42 RAI | 1 0.01 92.43 RAL | 2 0.02 92.45 RAM | 1 0.01 92.46 RBT | 1 0.01 92.47 RC | 1 0.01 92.48 RMV | 22 0.22 92.70 RNG | 164 1.64 94.34 RX | 1 0.01 94.35 S | 125 1.25 95.60 S/V | 14 0.14 95.74 S10 | 5 0.05 95.79 S15 | 23 0.23 96.02 S6M | 5 0.05 96.07 SAF | 11 0.11 96.18 SCO | 1 0.01 96.19 SCT | 1 0.01 96.20 SIE | 35 0.35 96.55 SON | 5 0.05 96.60 SPR | 1 0.01 96.61 SPX | 1 0.01 96.62 SS | 30 0.30 96.92 T10 | 1 0.01 96.93 TNS | 3 0.03 96.96 TOP | 1 0.01 96.97 TRK | 29 0.29 97.26 UDS | 1 0.01 97.27 V10 | 3 0.03 97.30 V15 | 5 0.05 97.35 V20 | 1 0.01 97.36 V25 | 2 0.02 97.38 VAN | 161 1.61 98.99 VVN | 2 0.02 99.01 VWG | 14 0.14 99.15 W10 | 6 0.06 99.21 W15 | 8 0.08 99.29 W20 | 11 0.11 99.40 W30 | 3 0.03 99.43 WAG | 2 0.02 99.45 WCN | 14 0.14 99.59 WHC | 2 0.02 99.61 WLC | 2 0.02 99.63 WRA | 3 0.03 99.66 X44 | 17 0.17 99.83 XCB | 12 0.12 99.95 XCN | 2 0.02 99.97 XPD | 3 0.03 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016