Frequencies for ser_tr variable in person dataset : VIN SERIES | TRUCK | Freq. Percent Cum. ------------+----------------------------------- | 196 18.20 18.20 *** | 625 58.03 76.23 40S | 4 0.37 76.60 600 | 7 0.65 77.25 700 | 1 0.09 77.34 999 | 114 10.58 87.93 B20 | 2 0.19 88.12 B22 | 13 1.21 89.32 B23 | 1 0.09 89.42 B25 | 2 0.19 89.60 B26 | 7 0.65 90.25 B30 | 3 0.28 90.53 C10 | 7 0.65 91.18 C15 | 1 0.09 91.27 CHK | 6 0.56 91.83 COF | 18 1.67 93.50 COM | 1 0.09 93.59 CON | 6 0.56 94.15 CSR | 2 0.19 94.34 CTV | 1 0.09 94.43 ECO | 1 0.09 94.52 ENV | 1 0.09 94.61 GCK | 5 0.46 95.08 HTP | 1 0.09 95.17 HUM | 1 0.09 95.26 MMX | 1 0.09 95.36 NPR | 1 0.09 95.45 OFF | 1 0.09 95.54 P20 | 1 0.09 95.64 RMV | 1 0.09 95.73 RNG | 10 0.93 96.66 RPC | 2 0.19 96.84 S | 2 0.19 97.03 S15 | 1 0.09 97.12 SAF | 2 0.19 97.31 SIE | 2 0.19 97.49 SON | 1 0.09 97.59 SRW | 2 0.19 97.77 STE | 3 0.28 98.05 TAC | 6 0.56 98.61 TRK | 1 0.09 98.70 TRO | 1 0.09 98.79 VAN | 9 0.84 99.63 W/Y | 1 0.09 99.72 WAG | 1 0.09 99.81 WRA | 2 0.19 100.00 ------------+----------------------------------- Total | 1,077 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016