Frequencies for first 10,000 rows of rail variable in accident dataset : RAIL XING | ID | Freq. Percent Cum. ------------+----------------------------------- 0000000 | 9,897 98.97 98.97 0000009 | 7 0.07 99.04 026120R | 1 0.01 99.05 027212G | 1 0.01 99.06 028125G | 1 0.01 99.07 028316S | 1 0.01 99.08 028343N | 1 0.01 99.09 028390W | 1 0.01 99.10 028427J | 1 0.01 99.11 028567L | 1 0.01 99.12 028582N | 1 0.01 99.13 028726R | 1 0.01 99.14 029941F | 1 0.01 99.15 029943U | 1 0.01 99.16 057230L | 1 0.01 99.17 245024S | 1 0.01 99.18 272097Y | 1 0.01 99.19 272159U | 1 0.01 99.20 272463X | 1 0.01 99.21 304256V | 1 0.01 99.22 306530N | 1 0.01 99.23 330445K | 1 0.01 99.24 351228T | 1 0.01 99.25 353736P | 1 0.01 99.26 425755V | 1 0.01 99.27 426287G | 1 0.01 99.28 434249T | 1 0.01 99.29 434428J | 1 0.01 99.30 434582G | 1 0.01 99.31 437899J | 1 0.01 99.32 437937R | 1 0.01 99.33 438193P | 1 0.01 99.34 600645K | 1 0.01 99.35 620922C | 1 0.01 99.36 621226B | 1 0.01 99.37 622727J | 1 0.01 99.38 622926L | 1 0.01 99.39 623323I | 1 0.01 99.40 624168T | 1 0.01 99.41 628183J | 1 0.01 99.42 639396A | 1 0.01 99.43 661891T | 1 0.01 99.44 663244P | 1 0.01 99.45 664045R | 1 0.01 99.46 726144M | 1 0.01 99.47 726756J | 1 0.01 99.48 726836C | 1 0.01 99.49 727155D | 1 0.01 99.50 728151E | 1 0.01 99.51 728288Y | 1 0.01 99.52 731946X | 1 0.01 99.53 731993I | 1 0.01 99.54 732734X | 1 0.01 99.55 741295P | 1 0.01 99.56 741819Y | 1 0.01 99.57 746905M | 1 0.01 99.58 747867J | 1 0.01 99.59 747870S | 1 0.01 99.60 749946C | 1 0.01 99.61 750703W | 1 0.01 99.62 750744B | 1 0.01 99.63 752252C | 1 0.01 99.64 753407N | 1 0.01 99.65 754935A | 1 0.01 99.66 760544U | 1 0.01 99.67 760678T | 1 0.01 99.68 760717G | 1 0.01 99.69 762057J | 1 0.01 99.70 766161M | 1 0.01 99.71 787633P | 1 0.01 99.72 789012B | 1 0.01 99.73 789701V | 1 0.01 99.74 789794K | 1 0.01 99.75 804481T | 1 0.01 99.76 804595F | 1 0.01 99.77 811057R | 1 0.01 99.78 831161P | 1 0.01 99.79 833918C | 1 0.01 99.80 834044E | 1 0.01 99.81 834613H | 1 0.01 99.82 842897K | 1 0.01 99.83 853082F | 1 0.01 99.84 856358C | 1 0.01 99.85 865105D | 1 0.01 99.86 9999999 | 14 0.14 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016