Frequencies for first 10,000 rows of ser_tr variable in vehicle dataset : VIN | Series-Truc | k | Freq. Percent Cum. ------------+----------------------------------- | 27 0.27 0.27 *** | 4,601 46.01 46.28 100 | 2 0.02 46.30 150 | 5 0.05 46.35 210 | 1 0.01 46.36 400 | 1 0.01 46.37 620 | 18 0.18 46.55 999 | 3,756 37.56 84.11 A10 | 12 0.12 84.23 ALM | 1 0.01 84.24 BRO | 10 0.10 84.34 C10 | 197 1.97 86.31 C12 | 1 0.01 86.32 C15 | 37 0.37 86.69 C20 | 78 0.78 87.47 C25 | 18 0.18 87.65 C30 | 17 0.17 87.82 C35 | 6 0.06 87.88 C40 | 1 0.01 87.89 C50 | 6 0.06 87.95 C60 | 18 0.18 88.13 C65 | 4 0.04 88.17 CGS | 2 0.02 88.19 CHK | 1 0.01 88.20 CLS | 2 0.02 88.22 CLU | 7 0.07 88.29 COF | 371 3.71 92.00 COL | 6 0.06 92.06 CON | 9 0.09 92.15 COU | 34 0.34 92.49 CPU | 4 0.04 92.53 CSC | 3 0.03 92.56 CTS | 50 0.50 93.06 D10 | 37 0.37 93.43 D20 | 11 0.11 93.54 D30 | 5 0.05 93.59 D40 | 1 0.01 93.60 D60 | 2 0.02 93.62 DC9 | 2 0.02 93.64 DH9 | 3 0.03 93.67 DJ9 | 1 0.01 93.68 DK9 | 1 0.01 93.69 E55 | 2 0.02 93.71 E65 | 1 0.01 93.72 ELC | 40 0.40 94.12 FC9 | 2 0.02 94.14 FH9 | 2 0.02 94.16 FJ9 | 1 0.01 94.17 FLS | 8 0.08 94.25 FN9 | 1 0.01 94.26 HI9 | 2 0.02 94.28 HLX | 17 0.17 94.45 HTC | 1 0.01 94.46 HTP | 11 0.11 94.57 HTW | 10 0.10 94.67 JEE | 19 0.19 94.86 JET | 2 0.02 94.88 JH9 | 2 0.02 94.90 JJ9 | 1 0.01 94.91 JV7 | 1 0.01 94.92 K10 | 57 0.57 95.49 K15 | 9 0.09 95.58 K20 | 15 0.15 95.73 K25 | 2 0.02 95.75 K35 | 1 0.01 95.76 KOM | 9 0.09 95.85 LCH | 6 0.06 95.91 LCW | 1 0.01 95.92 LDS | 6 0.06 95.98 LLN | 2 0.02 96.00 LN1 | 2 0.02 96.02 LTC | 15 0.15 96.17 LUV | 29 0.29 96.46 M65 | 3 0.03 96.49 MET | 1 0.01 96.50 MHC | 2 0.02 96.52 MHV | 28 0.28 96.80 MXV | 4 0.04 96.84 MXW | 4 0.04 96.88 NC9 | 1 0.01 96.89 P10 | 1 0.01 96.90 P30 | 1 0.01 96.91 P52 | 3 0.03 96.94 P62 | 33 0.33 97.27 PAR | 4 0.04 97.31 PL5 | 5 0.05 97.36 PYS | 1 0.01 97.37 RAM | 1 0.01 97.38 RAN | 28 0.28 97.66 RPU | 3 0.03 97.69 S55 | 1 0.01 97.70 SCT | 4 0.04 97.74 SPO | 7 0.07 97.81 SPR | 2 0.02 97.83 SPT | 5 0.05 97.88 T60 | 1 0.01 97.89 T80 | 1 0.01 97.90 TM8 | 1 0.01 97.91 TMX | 2 0.02 97.93 TNS | 2 0.02 97.95 TRA | 11 0.11 98.06 TV7 | 1 0.01 98.07 UNS | 1 0.01 98.08 V90 | 1 0.01 98.09 VAN | 168 1.68 99.77 W10 | 12 0.12 99.89 W20 | 7 0.07 99.96 WAG | 4 0.04 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Apr 2016