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Table 2
Sample Sizes (Unweighted) and Standard Errors (SE) of Estimates Weighted to Reflect Total U.S. Population Age 16+ for Figure 2

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Bicycled in past 30 days Total Male Female 16-24 25-34 35-44 45-54 55-64 65+ White Black Other Hispanic
Sample size 2,525 1,325 1,200 450 562 683 463 235 132 2,001 158 129 237
Standard errors of estimates 0.02 0.04 0.03 0.06 0.06 0.04 0.05 0.05 0.07 0.03 0.09 0.09 0.09

SOURCE: National Survey of Pedestrian and Bicyclist Attitudes and Behaviors, 2002. National Highway Traffic Safety Administration (NHTSA) and Bureau of Transportation Statistics (BTS).