Frequencies for first 10,000 rows of ser_tr variable in vehicle dataset : VIN SERIES | TRUCK | Freq. Percent Cum. ------------+----------------------------------- | 1 0.01 0.01 *** | 6,353 63.53 63.54 10S | 1 0.01 63.55 200 | 3 0.03 63.58 20S | 2 0.02 63.60 250 | 2 0.02 63.62 3/4 | 3 0.03 63.65 300 | 2 0.02 63.67 30S | 1 0.01 63.68 40S | 5 0.05 63.73 44P | 68 0.68 64.41 500 | 1 0.01 64.42 600 | 30 0.30 64.72 620 | 14 0.14 64.86 700 | 5 0.05 64.91 70S | 2 0.02 64.93 720 | 72 0.72 65.65 80S | 6 0.06 65.71 830 | 2 0.02 65.73 90S | 10 0.10 65.83 930 | 5 0.05 65.88 937 | 5 0.05 65.93 999 | 789 7.89 73.82 A10 | 1 0.01 73.83 ACL | 1 0.01 73.84 AMI | 4 0.04 73.88 ARO | 9 0.09 73.97 AST | 16 0.16 74.13 B20 | 31 0.31 74.44 B22 | 25 0.25 74.69 B26 | 7 0.07 74.76 BRO | 4 0.04 74.80 BUS | 1 0.01 74.81 C/C | 1 0.01 74.82 C10 | 152 1.52 76.34 C15 | 30 0.30 76.64 C20 | 45 0.45 77.09 C25 | 16 0.16 77.25 C30 | 21 0.21 77.46 C35 | 7 0.07 77.53 C50 | 8 0.08 77.61 C60 | 3 0.03 77.64 C65 | 2 0.02 77.66 C6M | 4 0.04 77.70 C6V | 19 0.19 77.89 C96 | 21 0.21 78.10 C97 | 6 0.06 78.16 CCH | 6 0.06 78.22 CGS | 3 0.03 78.25 CHK | 15 0.15 78.40 CLT | 1 0.01 78.41 CNV | 1 0.01 78.42 COE | 89 0.89 79.31 COF | 377 3.77 83.08 COL | 20 0.20 83.28 COM | 4 0.04 83.32 CON | 142 1.42 84.74 COU | 1 0.01 84.75 CPB | 1 0.01 84.76 CPU | 1 0.01 84.77 CSC | 1 0.01 84.78 CTS | 16 0.16 84.94 CTV | 21 0.21 85.15 CVS | 5 0.05 85.20 D10 | 9 0.09 85.29 D15 | 13 0.13 85.42 D20 | 9 0.09 85.51 D21 | 84 0.84 86.35 D30 | 6 0.06 86.41 D5I | 15 0.15 86.56 D95 | 5 0.05 86.61 DAK | 20 0.20 86.81 DC9 | 1 0.01 86.82 ELC | 7 0.07 86.89 EMH | 1 0.01 86.90 EUR | 1 0.01 86.91 F/E | 1 0.01 86.92 FCC | 1 0.01 86.93 FLS | 3 0.03 86.96 FSR | 1 0.01 86.97 FTR | 1 0.01 86.98 GEO | 1 0.01 86.99 GM4 | 103 1.03 88.02 HFB | 1 0.01 88.03 HFD | 1 0.01 88.04 HH9 | 1 0.01 88.05 HLX | 7 0.07 88.12 HSG | 1 0.01 88.13 HTC | 10 0.10 88.23 HTP | 185 1.85 90.08 HTW | 3 0.03 90.11 J95 | 1 0.01 90.12 JC9 | 2 0.02 90.14 JEE | 38 0.38 90.52 JET | 2 0.02 90.54 JIM | 1 0.01 90.55 K10 | 43 0.43 90.98 K15 | 17 0.17 91.15 K20 | 7 0.07 91.22 K25 | 1 0.01 91.23 K30 | 3 0.03 91.26 KOD | 1 0.01 91.27 LB1 | 1 0.01 91.28 LBX | 1 0.01 91.29 LCH | 1 0.01 91.30 LDS | 2 0.02 91.32 LLN | 6 0.06 91.38 LSB | 1 0.01 91.39 LTC | 2 0.02 91.41 LUV | 1 0.01 91.42 M65 | 1 0.01 91.43 M6V | 1 0.01 91.44 M95 | 2 0.02 91.46 MCV | 1 0.01 91.47 MHC | 1 0.01 91.48 MHV | 17 0.17 91.65 MMX | 19 0.19 91.84 MON | 4 0.04 91.88 MRM | 2 0.02 91.90 MSP | 1 0.01 91.91 MVN | 1 0.01 91.92 MXV | 6 0.06 91.98 NPR | 3 0.03 92.01 NRR | 2 0.02 92.03 P30 | 11 0.11 92.14 P42 | 1 0.01 92.15 P52 | 1 0.01 92.16 P62 | 10 0.10 92.26 PCC | 7 0.07 92.33 PFI | 13 0.13 92.46 PUP | 15 0.15 92.61 R/V | 3 0.03 92.64 R10 | 10 0.10 92.74 R15 | 4 0.04 92.78 R20 | 1 0.01 92.79 R25 | 2 0.02 92.81 R30 | 2 0.02 92.83 R35 | 2 0.02 92.85 R50 | 18 0.18 93.03 RAI | 1 0.01 93.04 RAL | 1 0.01 93.05 RAM | 1 0.01 93.06 RBT | 1 0.01 93.07 RMV | 17 0.17 93.24 RNG | 148 1.48 94.72 ROD | 2 0.02 94.74 ROY | 1 0.01 94.75 RPU | 2 0.02 94.77 RUN | 32 0.32 95.09 S | 125 1.25 96.34 S/V | 10 0.10 96.44 S10 | 4 0.04 96.48 S15 | 19 0.19 96.67 S6M | 4 0.04 96.71 SAF | 3 0.03 96.74 SB5 | 1 0.01 96.75 SBS | 1 0.01 96.76 SCR | 1 0.01 96.77 SCT | 7 0.07 96.84 SDK | 4 0.04 96.88 SIE | 19 0.19 97.07 SMR | 19 0.19 97.26 SON | 1 0.01 97.27 SPR | 3 0.03 97.30 SPX | 1 0.01 97.31 SS | 31 0.31 97.62 SXS | 2 0.02 97.64 TAL | 2 0.02 97.66 TNS | 9 0.09 97.75 TRK | 7 0.07 97.82 TRO | 9 0.09 97.91 UDS | 1 0.01 97.92 V15 | 3 0.03 97.95 V20 | 1 0.01 97.96 V25 | 1 0.01 97.97 VAN | 134 1.34 99.31 VVN | 1 0.01 99.32 VWG | 9 0.09 99.41 W10 | 10 0.10 99.51 W15 | 7 0.07 99.58 W20 | 4 0.04 99.62 W30 | 2 0.02 99.64 WAG | 6 0.06 99.70 WCN | 3 0.03 99.73 X44 | 14 0.14 99.87 XCB | 9 0.09 99.96 XCN | 2 0.02 99.98 XCO | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016