Frequencies for first 10,000 rows of ser_tr variable in vehicle dataset : VIN | Series-Truc | k | Freq. Percent Cum. ------------+----------------------------------- | 7 0.07 0.07 *** | 6,241 62.41 62.48 150 | 1 0.01 62.49 3/4 | 3 0.03 62.52 44P | 77 0.77 63.29 600 | 13 0.13 63.42 620 | 25 0.25 63.67 700 | 5 0.05 63.72 720 | 102 1.02 64.74 937 | 2 0.02 64.76 999 | 1,198 11.98 76.74 A10 | 1 0.01 76.75 ARO | 3 0.03 76.78 ART | 1 0.01 76.79 AST | 11 0.11 76.90 B18 | 1 0.01 76.91 B20 | 42 0.42 77.33 B22 | 2 0.02 77.35 B26 | 2 0.02 77.37 BRO | 7 0.07 77.44 BUS | 3 0.03 77.47 C/C | 1 0.01 77.48 C10 | 217 2.17 79.65 C15 | 45 0.45 80.10 C20 | 68 0.68 80.78 C25 | 15 0.15 80.93 C30 | 31 0.31 81.24 C35 | 15 0.15 81.39 C40 | 1 0.01 81.40 C50 | 4 0.04 81.44 C5M | 1 0.01 81.45 C60 | 14 0.14 81.59 C65 | 9 0.09 81.68 C6M | 7 0.07 81.75 C6V | 10 0.10 81.85 C96 | 18 0.18 82.03 CAB | 3 0.03 82.06 CCH | 2 0.02 82.08 CGS | 10 0.10 82.18 CHK | 21 0.21 82.39 COE | 59 0.59 82.98 COF | 363 3.63 86.61 COL | 6 0.06 86.67 COM | 2 0.02 86.69 CON | 103 1.03 87.72 COU | 3 0.03 87.75 CPU | 5 0.05 87.80 CSC | 1 0.01 87.81 CTS | 42 0.42 88.23 CTV | 12 0.12 88.35 CVS | 6 0.06 88.41 CWG | 1 0.01 88.42 D10 | 21 0.21 88.63 D15 | 14 0.14 88.77 D20 | 11 0.11 88.88 D21 | 47 0.47 89.35 D30 | 3 0.03 89.38 D5I | 23 0.23 89.61 D60 | 2 0.02 89.63 D95 | 2 0.02 89.65 DAK | 3 0.03 89.68 DC9 | 3 0.03 89.71 DH9 | 3 0.03 89.74 ELC | 6 0.06 89.80 EPU | 1 0.01 89.81 F95 | 4 0.04 89.85 FC9 | 3 0.03 89.88 FCC | 2 0.02 89.90 FLS | 4 0.04 89.94 G25 | 1 0.01 89.95 G40 | 1 0.01 89.96 GM4 | 4 0.04 90.00 H95 | 4 0.04 90.04 HI9 | 2 0.02 90.06 HIC | 1 0.01 90.07 HLX | 12 0.12 90.19 HTC | 6 0.06 90.25 HTP | 113 1.13 91.38 HTW | 5 0.05 91.43 INT | 4 0.04 91.47 J75 | 2 0.02 91.49 J95 | 2 0.02 91.51 JC9 | 1 0.01 91.52 JEE | 46 0.46 91.98 JET | 2 0.02 92.00 JI9 | 2 0.02 92.02 JPR | 1 0.01 92.03 K10 | 52 0.52 92.55 K15 | 30 0.30 92.85 K20 | 16 0.16 93.01 K25 | 4 0.04 93.05 K30 | 3 0.03 93.08 KRV | 1 0.01 93.09 LB1 | 4 0.04 93.13 LBD | 3 0.03 93.16 LDS | 6 0.06 93.22 LLN | 2 0.02 93.24 LSB | 1 0.01 93.25 LTC | 12 0.12 93.37 LUV | 1 0.01 93.38 M65 | 1 0.01 93.39 M95 | 1 0.01 93.40 MHC | 3 0.03 93.43 MHV | 20 0.20 93.63 MII | 1 0.01 93.64 MMX | 14 0.14 93.78 MRM | 3 0.03 93.81 MXV | 6 0.06 93.87 N95 | 1 0.01 93.88 NPR | 1 0.01 93.89 P20 | 1 0.01 93.90 P30 | 9 0.09 93.99 P52 | 6 0.06 94.05 P62 | 12 0.12 94.17 PAR | 1 0.01 94.18 PCC | 6 0.06 94.24 PFI | 4 0.04 94.28 PUP | 18 0.18 94.46 PYS | 1 0.01 94.47 R/V | 2 0.02 94.49 R15 | 2 0.02 94.51 R20 | 1 0.01 94.52 R30 | 1 0.01 94.53 R50 | 7 0.07 94.60 RAI | 1 0.01 94.61 RAL | 1 0.01 94.62 RAM | 1 0.01 94.63 RAN | 1 0.01 94.64 RB | 1 0.01 94.65 RBT | 1 0.01 94.66 RC | 1 0.01 94.67 RMV | 6 0.06 94.73 RNG | 92 0.92 95.65 ROY | 1 0.01 95.66 RPU | 2 0.02 95.68 RUN | 7 0.07 95.75 RX | 3 0.03 95.78 S | 77 0.77 96.55 S/V | 5 0.05 96.60 S10 | 10 0.10 96.70 S15 | 7 0.07 96.77 S6M | 1 0.01 96.78 SAF | 1 0.01 96.79 SCR | 1 0.01 96.80 SCT | 12 0.12 96.92 SMR | 11 0.11 97.03 SPT | 1 0.01 97.04 SPX | 1 0.01 97.05 SS | 27 0.27 97.32 TNS | 8 0.08 97.40 TRO | 4 0.04 97.44 V10 | 10 0.10 97.54 V15 | 1 0.01 97.55 VAN | 155 1.55 99.10 VGN | 2 0.02 99.12 VWG | 10 0.10 99.22 W10 | 7 0.07 99.29 W15 | 7 0.07 99.36 W20 | 5 0.05 99.41 W30 | 1 0.01 99.42 WAG | 10 0.10 99.52 WCN | 7 0.07 99.59 WHC | 3 0.03 99.62 WLC | 1 0.01 99.63 WV7 | 1 0.01 99.64 X44 | 19 0.19 99.83 XCB | 14 0.14 99.97 XCN | 1 0.01 99.98 XPD | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016