Frequencies for ptire_sze variable in parkwork dataset : Original | Tire Size | Freq. Percent Cum. ------------+----------------------------------- | 485 48.40 48.40 000000 | 22 2.20 50.60 13R155 | 2 0.20 50.80 13R165 | 2 0.20 51.00 13R175 | 7 0.70 51.70 146.95 | 1 0.10 51.80 147.35 | 1 0.10 51.90 14R175 | 11 1.10 52.99 14R185 | 27 2.69 55.69 14R195 | 30 2.99 58.68 14R205 | 5 0.50 59.18 15225 | 1 0.10 59.28 15GR70 | 1 0.10 59.38 15HR78 | 1 0.10 59.48 15R185 | 15 1.50 60.98 15R195 | 41 4.09 65.07 15R205 | 65 6.49 71.56 15R215 | 31 3.09 74.65 15R225 | 11 1.10 75.75 15R235 | 13 1.30 77.05 16R195 | 1 0.10 77.15 16R205 | 26 2.59 79.74 16R215 | 32 3.19 82.93 16R225 | 52 5.19 88.12 16R235 | 19 1.90 90.02 16R245 | 8 0.80 90.82 16R255 | 9 0.90 91.72 16R265 | 4 0.40 92.12 17R205 | 4 0.40 92.51 17R215 | 15 1.50 94.01 17R225 | 17 1.70 95.71 17R235 | 18 1.80 97.50 17R245 | 4 0.40 97.90 17R265 | 4 0.40 98.30 18R225 | 2 0.20 98.50 18R235 | 4 0.40 98.90 18R245 | 4 0.40 99.30 18R255 | 4 0.40 99.70 18R265 | 1 0.10 99.80 19R245 | 1 0.10 99.90 19R255 | 1 0.10 100.00 ------------+----------------------------------- Total | 1,002 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016