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Table B-14a. Estimated Measures of Reliability for Hazardous Material Shipment Characteristics for Toxic by Inhalation (TIH): 2002

Monday, July 2, 2012

Table B-14a. Estimated Measures of Reliability for Hazardous Material Shipment Characteristics for Toxic by Inhalation (TIH): 2002

[Estimates are shown as percents and are based on data from the 2002 Commodity Flow Survey]

Excel | CSV

Description Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
Total 3.0 &#8211 4.2 &#8211 4.4 &#8211
Toxic by Inhalation 8.5 0.1 11.2 0.1 11.0 0.2

KEY:
&#8211 Represents an estimate equal to zero or less than 1 unit of measure.
S Estimate does not meet publication standards because of highly sampling variability or poor response quality.
CV Coefficient of variation of number

NOTE: The Introduction and appendixes give information on confidentiality protection, sampling error, nonsampling error, sample design, and definitions. Links to this information on the Internet may be found at www.census.gov/cfs.

SOURCE: Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, Hazmat Data, December 2004.